Lake Baikal length. Lake Baikal - the most amazing lake in the world

Baikal- a lake of tectonic origin located in the southern part of Eastern Siberia, on the border of the Republic of Buryatia and the Irkutsk region

Baikal itself

Lake Baikal stretches from southwest to north for 636 kilometers. The width of the lake varies from 25 to 80 km. The water surface area is 31,722 km. sq. The length of the coastline is 2100 km. Baikal is the deepest lake in the world - its maximum depth is 1642 meters. The lake has huge reserves fresh water- 23,615 km. cubic meters, which is 20% of all world reserves.

The area around

Lake Baikal is surrounded on all sides by hills and mountain ranges. Wherein West Coast- steep and rocky, the eastern coast is more gentle. 336 streams and rivers flow into the Lake. Most major tributaries: Upper Angara, Selenga, Turk, Barguzin, Sarma, Snezhnaya. Only one river flows out of the lake - the Angara. There are 27 islands on Baikal, the largest of the islands is Olkhon, which is 71 km long and 12 wide, largest peninsula- Holy Nose

Climate

The huge water mass of Lake Baikal has a strong influence on the climate of the coastal area. Summers are cooler here, while winters are milder. Spring comes later by 10-15 days compared to the surrounding areas, and sometimes longer. climate features are due Baikal winds, which even have their own names - sarma, barguzin, kultuk, verkhovik.

When to go to Baikal

Characteristics

Briefly the main characteristics of Baikal

• Length - 363 km.
• Width - 79.5 km.
• Area -31722 sq. km.
• Volume - 23615 cubic meters. km.
• The average depth is 744 meters.
• The maximum depth is 1637 meters.
• There are 27 islands on Baikal.
• 29 fish species are endemic

Depth

Lake Baikal is the deepest in the world - 1637 meters, the depth was established in 1983. Wherein average depth also very large - 744 meters. In 2002, these data were confirmed and a depth map was compiled.

• the area of ​​Baikal is equal to the area three countries— Denmark, Belgium, the Netherlands.
• Baikal is the deepest lake on earth
• The lake contains 19% of the world's fresh water

Baikal has an elongated crescent shape. His extreme points lie between 51°29" (st. Murino) and 55°46" (mouth of the Kichera River) north latitude and between 103°44" (st. Kultuk) and 109°51" (Dagar Bay) east longitude.

The shortest line passing through the area of ​​the lake and connecting the most remote points of its shores, i.e. the length of the lake, equal to 636 km, the largest width of Baikal, equal to 79.4 km, is located between Ust-Barguzin and Onguren; the smallest, different 25 km, is located opposite the delta of the river. Selengi.

The area from which rivers currently collect water and bring it into Baikal, or its so-called catchment area, is 557,000 square meters. km *) . It is distributed in relation to the area of ​​the lake itself very unevenly (see the map of the basin). Along the entire western shore, the border of this area runs just a few kilometers from the lake shore. It is limited almost everywhere by the watershed of the mountains visible from the lake.

*) According to Yu.M. Shokalsky, the basin of Lake Baikal reaches 582,570 sq. km. - Approx. ed.

The basin of the Lena River approaches this watershed along the entire length of northern Baikal, and the Lena itself originates 7 km from the shore of Lake Baikal near Cape Pokoiniki. The catchment area of ​​Baikal to the south and southwest of the lake towards the Selenga River basin is most widespread. The basin of this river, equal to 464,940 sq. km, is 83.4% of the total catchment area of ​​Lake Baikal. The next largest basin is the Barguzin River, whose basin is 20,025 sq. km and is 3.5% of the total catchment area of ​​Lake Baikal. The share of all other tributaries of Baikal accounts for a catchment area of ​​72,035 sq. km, equal to 13.1% of the total catchment area of ​​the lake.

Lake Baikal itself is located in a narrow basin, bordered by mountain ranges, spurs of the Sayan, cut in a number of places by relatively narrow valleys, along which its tributaries flow into the lake.

In the south, along its eastern shores, snow-covered peaks of the Khamar-Daban ridge stretch almost all year round with the highest heights up to 2000 m above sea level. This is exactly the chain of mountains that is visible to anyone traveling along the shores of Lake Baikal by rail. These mountains are especially clearly visible on the stretch between st. Baikal and st. Kultuk. The Pribaikalsky Range adjoins the western shores of southern Baikal. Its height almost along its entire length from Kultuk to the Small Sea does not exceed 1300-1200 m above sea level, but these mountains stand on the very shore of Lake Baikal.

Starting from the Small Sea and to the northernmost tip western coasts Lake Baikal stretches the Baikal mountain range, gradually rising to the north from Cape Rytoy to Cape Kotelnikovsky. In this area, Mount Karpinsky reaches its highest height of 2176 m, Mount Sinya - 2168 m, etc. Almost the entire length of the peaks of the Baikal Range is covered with snow that does not melt even in the middle of summer, and in many places traces of glaciers that descended from them until recently are visible.

This ridge is crossed by a series of deeply incised valleys along which mountain streams stretch. In terms of their picturesqueness, the eastern shores of the northern part of the lake are one of the most wonderful places on Baikal. To the eastern shores, starting from the Chivyrkuisky Bay and to the northernmost tip of the lake, another ridge approaches - the Barguzinsky, reaching a considerable height - up to 2700 m. This ridge, however, is located at some distance from the shores, and relatively low foothills adjoin directly to the latter, in some places forming picturesque cliffs, and on the predominant part of the coast, gently descending to the waters of the lake.

The interval of the eastern shore of the lake between the Selenga and the Barguzin Bay is bordered by the Ulan-Burgasy ridge, which has a height of 1400-1500 m near Baikal.

The most pronounced bend of the coastline of Lake Baikal is the Svyatoy Nos peninsula, located between the two largest bays on Baikal - Barguzinsky and Chivyrkuisky.

This peninsula in the form of a massive block of stone, reaching a height of 1684 m, rises above Baikal, falling to the water with steep rocky cliffs. However, towards the mainland, it falls more gently and then passes into a narrow and swampy isthmus, merging with a vast lowland adjacent to the river valley. Barguzin. There is no doubt that until recently the Svyatoy Nos Peninsula was an island, and the waters of the Chivyrkuisky and Barguzinsky bays formed one vast strait, subsequently filled with drifts from the river. Barguzin.

Baikal has 19 permanent islands, the largest of them is Olkhon. It has a length of 71.7 km and an area of ​​729.4 sq. km. Olkhon Island, - separated from the continent by a strait less than a kilometer wide, called "Olkhon Gates", elongated in a northeasterly direction, is a mountain range, with the highest point - Mount Izhimey, reaching a height of 1300 m and abruptly breaking off to the east shore. The northern part of the island is wooded, while the southern part is completely devoid of tree vegetation and is covered with meadows with traces of steppe vegetation that was once, apparently, widespread here.

The shores of Olkhon facing the Small Sea are subjected to very strong destruction by the surf. Interesting both in its position and in its picturesqueness is the group of the Ushkany Islands, located opposite the Svyatoy Nos peninsula in the middle part of the lake. This group consists of four islands, of which Big Ushkany Island has an area of ​​9.41 sq. km, and the remaining three islands (Thin, Round and Long) do not exceed half a square kilometer. The large Ushkany Island reaches a height of 150 m, while the small ones are only a few meters above the average water level of Lake Baikal. All of them are rocky, with banks composed mainly of limestone and covered with dense forest. These islands are greatly destroyed and, as it were, cut off by the surf.

The time is not far off when the small Ushkany Islands will disappear under the surface of the waters of Lake Baikal.

The remaining islands on Baikal are all located near its shores, four of them are in the Chivyrkuisky Bay (Bol. and Small. Kyltygey, Elena and Baklany), six in the Small Sea (Khubyn, Zamugoy, Toinik, Ugungoy, Kharansa, Izokhoy, etc.) and the rest - in close proximity to the shores of other parts of Baikal, such as Listvenichny, Boguchansky, Baklany (near Peschanaya Bay), etc.

All islands have a total area of ​​742.22 sq. km, and most of them are large capes, separated from the continent under the influence of the destructive force of the surf. In addition, there are also several low sandy islands on Baikal, which in high water are completely hidden under water and protrude above the surface only when the water is low. Such are the islands elongated in the form of narrow strips that separate Proval Bay from Baikal (Chayachi Islands, Sakhalin), such are the islands that separate Angara Sor from open Baikal - the so-called Yarki. The islands separating the Istoksky Sor from the open Baikal belong to the same type.

The bays and inlets, which are so important for the anchorage of small vessels, are a relatively rare phenomenon on Baikal, moreover, they are very unevenly distributed along the coast.

The largest bays, Chivyrkuisky and Barguzinsky, which we have already mentioned above, are formed by the Svyatoy Nos peninsula protruding from the lake. Almost a bay is the so-called Small Sea, separated from open Baikal by Olkhon Island and Proval Bay, to the north of the Selenga delta.

Peschanaya and Babushka bays on the western shore of southern Baikal are famous for their picturesqueness. Further, a peculiar group of bays, or rather lagoons, bearing the name “sors” on Baikal, are separated from open lake narrow sandy spits of its former bays. Such are the Posolsky and Istoksky sors, separated from Baikal by narrow strips of land washed by the action of the surf, such is the Angarsky sor in the very north and Rangatui in the depths of the Chivyrkuisky Bay. All of them are separated from Baikal by narrow strips of sediment, in the form sandbars, in high water sometimes completely hiding under the surface of the lake.

Except for these large bays, almost separated from Baikal by its sediments, all other bends of its coast depend to a large extent on the direction of the Baikal coastline, since the sinuosity of its coast depends on whether the coast is directed along or across the dominant direction of the mountain ranges. that make up the coast.

Those sections of the Baikal coast that are directed across the main direction of the mountain ranges that limit its basin are characterized by significant indentation, such as, for example, the Olkhon Gates or the southern coast of the Barguzin Bay. Those sections of the coast, which in their direction coincide with the direction of the mountain ranges that limit the Baikal basin in this area, are characterized, on the contrary, by exceptional straightness, disturbed only by secondary accumulations of coastal sediments or the eroding effect of the surf. This is the entire section of the western shore of Lake Baikal from the mouth of the river. Sarma to Cape Kotelnikovsky, such is the area that limits the Svyatoy Nos peninsula from the west, and many others.

In many areas, the shore of Lake Baikal is completely straight for many kilometers, and almost sheer cliffs, many meters high, break into the water very often. Particularly characteristic in this regard is the section between Sosnovka and the entrance to the Chivyrkuisky Bay on the eastern shore of middle Baikal or the section from Onguren to Cape Kocherikovsky on the western shore of middle Baikal.

According to the distribution of depths or the topography of the bottom, Baikal can be divided into three main deep depressions. The first of them - southern, occupies the entire southern Baikal to the confluence of the river. Selenga. The greatest depth of this depression is 1473 m, while the average depth is 810 m. The depression of southern Baikal is characterized by an exceptionally steep bottom slope near the western and southwestern shores and a relatively gentle slope near the opposite slopes.

Lacustrine deposits at the bottom of the southern depression did not completely smooth out the features of the original relief, at the bottom of which there are a number of hollows and irregularities adjoining the Transbaikal coast and elongated into northeast direction. These underwater ridges are especially pronounced in the part of the depression adjacent to the delta of the river. Selenga, and hide under its deposits. One of these ridges stands out so much that it forms in the middle of the width of Baikal on the line between the village. Goloustny and s. Posolsky shallow water, where depths of 94 m have been discovered, and the depths in this shallow water have not yet been sufficiently explored and it cannot be vouched for that even smaller depths will not be found there. This shallow water is, in all probability, a remnant of what has been noted here on old maps Stolbovoy Island, partly destroyed by the waters of Baikal, partly submerged under its surface.

On the bridge separating the southern deep basin of Baikal from its middle basin, the depth does not exceed 428 m, and this bridge basically reflects the structure of the bedrock. This view is supported by the presence of a longitudinal ridge stretching in front of the Selenga delta, extending far both in the southwestern and northeastern directions and known by the locals as "manes". In its part adjacent to the Selenga, this lintel is gradually and significantly modified by the offsets of the Selenga.

To the east of the ridge directed to the northeast, approximately opposite the channel of the Selenga delta, called Kolpinnaya, there is a deepening of the bottom, reaching 400 m and locally called the "deep". A legend is connected with this abyss that in this place in the bottom of Baikal there is a hole through which Baikal connects either with Lake Kosogol or with the North Polar Sea. The emergence of this legend was facilitated by the fact that in the region of the depression there is a local whirlpool, which is well observed on quiet days, when all objects floating on the surface receive rotational motion. This whirlpool, which gives the impression that water is drawn into the hole below, is caused by the meeting of currents in two directions, which mix the surface layers of water to a depth of about 25 m.

The middle deep basin of Baikal occupies the entire space between the barrier against the Selenga and the line connecting the northern tip of Olkhon Island through the Ushkany Islands with Cape Valukan on the eastern shore of Lake Baikal. In this depression are the greatest depths of Baikal, reaching 1741 m. This depth is located at a distance of 10 km from Cape Ukhan on Olkhon. The average depth of the basin reaches 803 m. The area occupied by depths over 1500 m, which are not found in the other two deep basins of Baikal, is 2098 sq. km. km. The bottom has a particularly steep drop near the eastern shores of Olkhon Island, as well as to the east of the Ushkany Islands, where in some areas of the bottom the slope angle reaches over 80 °.

The bottom sections adjacent to the eastern coast of the depression are more gentle, and depths of 100 m in some places are here several kilometers from the coast.

The Barguzinsky Bay, which is part of the middle basin, has a very complex bottom topography. It is divided into two depressions by an underwater ridge. In the part of the bay adjacent to the southern head of the Svyatoi Nos peninsula, depths of more than 1300 m enter, which go far into its northern part. The relief of the bottom of the entire eastern part of the bay is influenced by the drifts of the river. Barguzin, which covered the bedrock topography with a thick layer of sediments.

The depression of middle Baikal is separated from the northern depression by an underwater ridge, open station in 1932 and named Academic.

This ridge, on which the depths do not exceed 400 m, stretches from the northern tip of Olkhon Island to the Ushkany Islands and further, less pronounced, to the north to Cape Valukan. Thus, the Ushkany Islands themselves are only protruding above the surface northern part Academic Ridge. This ridge has slopes that descend very steeply to the southeast towards the depression of middle Baikal, and gently to the northwest towards the northern depression, i.e. retains the same features as the profiles of Olkhon Island and Bolshoi Ushkany Island.

The northern deep basin of Baikal occupies the entire space located north of the Akademichesky Range and includes the Small Sea. This depression has the greatest depth of only 988 m, its average depth is 564 m. The northern depression is characterized by an exceptional evenness of the bottom topography with a gradual increase in depth from the southern end of the Small Sea to the Kotelnikovsky Cape area. In the northern depression near the western shores, the bottom slopes more steeply into the depths than near the eastern shores, where there are significant shallow waters.

Most of the surface of the bottom of Lake Baikal at depths of more than 100 m is covered with thick deposits of silt, which mainly consists of countless shells, dead and fallen to the bottom of algae that lived in the upper layers of water. Only in a few places, like the Akademichesky Ridge, does the bottom of Baikal consist of bedrock, there are also areas of the bottom where rounded boulders and pebbles can be found at great depths, obviously, these are flooded channels of ancient rivers that are not covered with silt deposits due to the bottom currents there.

As for the shallow depths of Baikal, many consist of vast areas, especially those adjacent to river deltas, of sand or sand mixed with silt. Even closer to the coast, the bottom is covered mainly with stones and more or less large pebbles. Only in a few areas the bottom to the very shores is composed of sand. Such areas are of great importance, as they are convenient for seine fishing.

Not always, however, Baikal had those character traits bottom topography and the form of its outlines that it currently possesses. There is reason to assert the opposite, namely, that Baikal in its present form was formed, from a geological point of view, relatively recently - at the end of the Tertiary or even at the beginning of the so-called Quaternary time. By this time, according to the modern views of geologists, the formation of great depths of Baikal, as well as the formation of those mountain ranges that border the lake. There is little information about what the reservoir that was on the site of Baikal before that time was.

Apparently, it was a complex system of lakes, interconnected by straits and occupying a larger territory than modern Baikal. There is reason to believe that this multi-lake area extended to Transbaikalia, Mongolia, and possibly Manchuria and Northern China.

Thus, Baikal in its current state is, to a certain extent, a remnant of water bodies that once occupied a vast area and repeatedly underwent significant changes. How could this affect the composition of the animal and flora Baikal, we will consider below, in the corresponding chapter.

During ice age when powerful glaciers covered some parts of Siberia large spaces, there was no continuous glaciation in the Baikal region, and glaciers descended to the shores of Baikal only in some places. Heaps of stones and sand, brought by glaciers and called moraines, in northern Baikal in many places descend from the adjacent mountains to Baikal itself, but it can be argued that this ice has never completely covered the surface of Baikal.

The moraines left after the ice age had a significant impact on the formation of the shores of Northern Baikal. Some capes in the north of Baikal are made of moraine materials, such as, for example, Cape Bolsodei. On the eastern shore of Northern Baikal, where many capes are also made of moraine material, they were subjected to severe destruction by the surf. Smaller boulders and loose material were washed away by the waves, and large boulders, preserved in the area as dangerous pitfalls for navigation, are the remains of moraines that were in these places and indicate their much greater distribution in the past than is the case now.

Geologists have made different assumptions about how the Baikal basin with its vast depths was formed in its modern form.

During the eighteenth and first half of the nineteenth centuries, geologists believed that Baikal was a deep sinkhole in the earth's crust, resulting from major disaster that took place in this area of ​​the mainland. I.D. Chersky significantly changed these ideas. He considered Baikal not a failure, but a very ancient reservoir, preserved from the time of the Silurian Sea and gradually deepened due to the slow and smooth bowing of the earth's crust.

Later acad. V.A. Obruchev returned to the old ideas about the failure and explains the formation of the modern depths of Baikal by subsidence of the bottom of the graben, which this lake is. This subsidence occurred simultaneously with the uplift, which formed mountain country on the coast of Lake Baikal, and apparently continues to this day.

There are other geologists who also associate the formation of Baikal with the arched uplift of the Baikal region and subsidence - the collapse of the central part of this arch, but the time of this uplift, in their opinion, refers to the second half of the Quaternary period, i.e. to the time of the existence of primitive man.

Finally, according to the latest views of E.V. Pavlovsky, the Baikal depressions and the ridges separating them are the so-called synclines and anticlines, complicated by faults and developed gradually over many geological epochs, against the background of a general arched uplift of the Stanovoi ridge.

Finally, according to the views of N.V. Dumitrashko, Baikal is a complex system of three basins. The southern one arose during the Upper Jurassic, the middle one - in the Tertiary time, the northern one - at the border of the Tertiary and Quaternary time. The hollows and the ridges surrounding them are blocks into which the Baikal region was divided during the last epochs of mountain building. The slumped boulders turned into depressions, the rising ones turned into ridges. We have a number of evidence that the formation of the Baikal basin continues to this day, and that the bottom of the basin continues to sink, and its edges in the form of mountain ranges limiting the Baikal depressions rise.

Signs of the lowering of the coast, villages. Ust-Barguzin in 1932. Photo by G.Yu. Vereshchagin

The subsidence of the shores of Baikal is especially pronounced in places where the basin continues beyond its shores, such as, for example, to the west of the area between Kultuk and Slyudyanka, in the Barguzin Bay, in the area between the Kichera and Upper Angara rivers, as well as on the far protruding basins of Baikal, the delta of the river. Selenga. In all these places, not only are there features of the coastline, which indicate the gradual sinking of the coast under the lake level, but there are also those confirming this. historical facts. So the village of Ust-Barguzin has already changed its place twice, moving away from the shore of Lake Baikal, as the waters of the lake flood the place of its former location. This village is in a semi-flooded state at the present time. A similar phenomenon is observed in the village located at the mouth of the river. Kichery (Nizhnangarsk), where once was the center of the entire district, and now only a small number of houses remain. In the Selenga delta, the lowering of the terrain is expressed in the gradual swamping of the delta's meadows and the transformation into a swamp of once-dry mowings and even fields.

But the most significant is the lowering of part of the coast in the area of ​​the river. Selenga in December 1861, which led to the formation of Proval Bay. Then the northern part of the river delta disappeared under the waters of Lake Baikal. Selenga, the so-called Tsagan steppe with all the Buryat uluses, hayfields and other lands, with a total area of ​​​​about 190 square meters. km. This was preceded by an earthquake, while a strong vertical impact was felt, from which the soil on the steppe swelled with mounds and sand, clay and water were thrown out of the wide cracks formed. The steppe was flooded with water, which spouted fountains, more than two meters high. And the next day, the water of Baikal flooded the entire descended space to the Bortogoi steppe. According to eyewitnesses, the water came from the lake like a wall. In place of the steppe, Proval Bay is currently spreading with depths of up to three meters.

The secondary redistribution of sediments along the shores leads to a number of changes in the nature of the Baikal coastline, of which we will only point out the most important ones. Thus, the accumulation of these sediments in bays and other bends of the coast leads to their gradual straightening and the formation of shallow, gently descending to the water's edge coasts, composed of sand or small pebbles, which are usually good non-aqueous tones.

The movement of sediment along the coast leads to other phenomena: for example, islands located near the coast are gradually attached to the coast by forming a bridge made of sediment connecting them to the coast. The largest of these bridges on Baikal connects, as already noted, the former rocky island of Svyatoy Nos with the continent, turning it into a peninsula. Typical dams made of sediments are observed on some capes of the Small Sea, such as Kurminsky, which was also once an island and only secondarily, by sediments, is attached to the coast. In the same way, some capes in the Chivyrkuisky Bay are attached to the coast, for example, Cape Monakhov, Cape Katun, etc.

The advancing coastal shaft near the mouth of the river. Yaksakan (east coast of northern Baikal). Photo by L.N. Tyulina

The movement of sediments along the coast also leads to the lacing of its bays from the lake. It is this process that caused the formation of its so-called sors on Baikal. Once it was just the bends of the coast - bays. Away from these bays along the coast, under the influence of the prevailing direction of the surf, the movement of sediments, which, having reached the bay, was deposited on its bottom in a direction that is a continuation of the general direction of the coast in this area. Thus arose narrow, elongated in the form of stripes sand islands, by which the litter is gradually separated from Baikal. In some cases, such bridges have already led to the almost complete separation of bays from the lake, such as, for example, Posolsky sor. In other cases, this process is not completed, such as, for example, the Istoksky sor, or it is just beginning, which takes place in Proval Bay.

In the cases prevailing on Lake Baikal, coastal sediments are weakly accumulated near its shores, and as a result, the shores themselves are exposed to the destructive action of the surf. Some parts of the coast are literally gnawed away by the surf. Up to a height of 5 meters or more, the rocks are destroyed, representing cliffs with an uneven, porous surface, and in many places niches and caves are carved into the rocks by the surf.

The destruction is especially strong on the shore of the island facing the Small Sea. Olkhon and, in particular, on the capes of this coast, as well as on the capes of the Olkhon Gate Strait.

The surf can also lead to the complete destruction of the islands, as if cutting them near the water's edge. It is in this state, very close to complete destruction, that the Small Ushkany Islands are located, of which the long island is currently only a few meters wide.

Completely cut off by the surf of Lake Baikal, apparently, is the island of Stolbovoy, which was once in the middle of Lake Baikal between Goloustnoye and Posolsky and marked on old maps, and now its trace has been preserved only in the form of a shoal in this place.

The surf leads to the separation of capes from the continent and their transformation into islands. This is observed in the Small Sea, where the islands of Kharansa and Edor arose in this way.

Enormous waves, causing a strong surf, as well as the roughness of the lake, in which this excitement is repeated very often, cause an exceptionally strong influence of the surf on the shores and leads both to their destruction and to the movement of sediments and the formation of shore sections washed by the lake. Baikal is a classic place for studying the work of the lake on its shores, which is far from being appreciated in this regard to the proper degree.

Lake Baikal - what is it like?

In outline, Baikal looks like a narrow crescent, so easy to remember that it can be easily found on the map of Russia even by those who are not particularly strong in geography. Stretching from the southwest to the northeast for as much as 636 kilometers, Baikal seems to squeeze between mountain ranges, and its water surface is at an altitude of more than 450 meters above sea level, which gives every reason to consider it a mountain lake. From the west, the Baikal and Primorsky ridges adjoin it, from the east and southeast - the massifs of Ulan-Burgasy, Khamar-Daban and Barguzinsky. And all this natural landscape so harmonious that one without the other is hard to imagine.

Even Oleg Kirillovich Gusev (1930-2012), candidate of biological sciences, professional hunter, editor-in-chief of the oldest Russian magazine "Hunting and hunting economy" and author of several books on the problems of preserving the unique nature of this lake, wrote: "Baikal gives us great joy and great pleasure." And he added: “It strikes with its monumental style and the beautiful, eternal and powerful that is inherent in its very nature”, emphasizing that the more you get close to it, the more tempting it becomes, and the more clearly you understand that Baikal is unique and charmingly inimitable. Anyone who visits here at least once can be convinced of the veracity of these words.

lake depth

The depth of the lake is truly impressive - 1637 meters. According to this indicator, Baikal surpasses such largest water bodies as Tanganyika (1470 m), the Caspian Sea (1025 m), San Martin (836 m), Nyasa (706 m), Issyk-Kul (702 m) and the Great Slave Lake (614 m). m). The remaining deepest lakes in the world, twenty-two in total, are less than 600 meters deep. And the climatic conditions on Baikal, as they say, match its unique features: here the sun is mercilessly scorching and cold winds are blowing, storms are raging and the calmest weather is set, conducive to beach recreation.

Features and mysteries of Baikal

The coastline of the Siberian "crescent" is 2100 km long, it has 27 islands, the largest of which is Olkhon. The lake is located in a kind of basin, which, as mentioned above, is surrounded on all sides by mountain ranges and hills. This gives reason to assume that coastline the reservoir is the same throughout. In fact, only the western coast of Baikal is rocky and steep. The relief of the eastern one is more gentle: in some places the mountain peaks are at a distance of 10 or more kilometers from the coast.

Lake Baikal water

23,615.39 km³ - reserves are measured with such a fantastic figure Baikal water. According to this indicator, the lake is second only to the Caspian Sea. Considering that in the latter it is salty, it is Baikal that occupies the first line of the world ranking in terms of fresh water reserves, that is, suitable for drinking water. In addition, it is extremely transparent, and all thanks to a very small amount of suspended and dissolved minerals, not to mention organic impurities - they are generally negligible here. At a depth of up to 35-40 meters, you can even distinguish individual stones, especially in spring, when the water turns blue. It also has a huge supply of oxygen. No wonder Baikal - for the totality of such unique properties and qualities - is called national treasure Russia.

The water in Baikal is very clean. Previously, it could be drunk directly from the lake and not even boiled. But now crowds of tourists have rushed to Lake Baikal, who still pollute this area, so now, before drinking Baikal water, you should ask the locals where this can be done.

Baikal ice

The time of freezing on the lake lasts on average from the beginning of January to the beginning of May. During this period, it freezes almost completely. The only exception is a small 15-20-kilometer section located at the source of the Angara. At the end of winter, the ice thickness can reach 1 meter, and even more in the bays - one and a half to two meters. In severe frosts, huge cracks form on the ice, which are called here “stand cracks”. They are so impressive that they can reach from 10 to 30 km in length. The width, however, is small: only 2-3 m. Such “slits” literally tear the ice cover into separate fields. If it were not for cracks, the formation of which is accompanied by a loud, like a cannon shot, sound, then lake fish would die en masse from a lack of oxygen.

Baikal ice has a number of other features that are unique to it, and truly mysterious, which scientists have not been able to explain. Back in the middle of the last century, specialists from the local limnological station discovered the so-called "hills" - hollow ice hills in the shape of a cone, reaching a height of 5-6 meters. Being "open" to the side opposite the shore, they even somewhat resemble tents. Sometimes there are "solitary hills", that is, located separately from each other. In some cases, they are grouped, forming "mountain ranges" in miniature.

Dark rings on the lake

Another riddle - dark rings, whose diameter is 5-7 km (moreover, the width of the lake itself is 80 km). They have nothing to do with the "belt of Saturn", although they were also discovered through satellite imagery. Satellite photographs of amazing formations, taken back in 2009 in different parts of Lake Baikal, went around the entire Internet. Scientists puzzled for a long time: what could it be? And they came to the conclusion that the rings arise due to the rise of deep waters and an increase in the temperature of the upper layer in the center of the ring structure. And as a result, a clockwise flow arises, reaching maximum speeds in certain zones. As a result, vertical water exchange increases, provoking the destruction of the ice cover in an accelerated mode.

Bottom of Baikal

It is impossible not to say about the bottom of the amazing reservoir. It also differs from others, and above all in that it has a very pronounced relief - there are even underwater mountain ranges. The three main basins of the lake - northern, southern and middle, separated by the Akademichesky and Selenginsky ridges - are distinguished by a pronounced bed. The first ridge (his maximum height above the bottom is 1848 meters), is especially expressive: it stretches for as much as 100 km from Olkhon Island to the Ushkany Islands.

earthquakes

Another feature of these places is high seismic activity. Fluctuations of the earth's crust here occur regularly, but the strength of most earthquakes does not exceed one or two points. But there have been powerful ones in the past. For example, in 1862, when a ten-point “shake” led to the sinking of an entire piece of land in the northern part of the Selenga delta, one of the many tributaries of Baikal, under water. Its area was 200 km, about 1500 people lived in this territory. Later, a bay formed here, which is called the Failure. Strong earthquakes also occurred in 1903, 1950, 1957 and 1959. The epicenter of the latter, 9-point, was at the bottom of the lake in the area of ​​the rural settlement of Sukhaya. The aftershocks were then also felt in Irkutsk and Ulan-Ude - about 5-6 points. In our time, the region was shaking in 2008 and 2010: the strength of the tremors was 9 and 6.1 points, respectively.

Origin of Lake Baikal

Lake Baikal still hides the secret of its origin. Researchers often argue about its age, coming to the conclusion that it is at least 25-35 million years. The indicator is impressive, especially considering that the life cycle of most lakes, and in the first place glacial origin, does not exceed 10-15 thousand years. After this period, they either become swampy or filled with silty sediments. With Baikal, nothing like this has happened and is not happening. And, according to scientists, is unlikely to happen in the future. The lack of signs of aging is explained by the fact that the lake is ... a nascent ocean. The hypothesis did not arise out of the blue: as it turned out, its banks move away from each other by 2 cm every year.

Flora and fauna

An interesting fact: the purity of Baikal water is, by the way, very cold (temperature surface layers even in the warm season it does not exceed +8-9°C on average) - supported by the microscopic crustacean epishura, one of the most famous local endemics. In the course of its life, this 1.5 mm crustacean consumes organic matter (algae), passing water through its small organism. The role of epishura in the ecosystem of the lake can hardly be overestimated: it forms 90 or more percent of its biomass, serving in turn as food for the Baikal omul and predatory invertebrates. In the processes of self-purification of Lake Baikal, oligochaetes or oligochaetes also play a significant role, 84.5 percent of which are endemic.

Of 2600 species and subspecies local fauna More than half of aquatic animals are endemic, that is, living exclusively in this lake. Among the fish, one can also distinguish grayling, Baikal sturgeon, whitefish, taimen, pike, burbot and others. Of particular interest is the golomyanka, which, from a human point of view, “suffers” from obesity: its body contains about 30% fat. She loves to eat so much that in search of food every day she makes a “journey” from the depths to shallow water, which surprises researchers a lot. This underwater inhabitant is also unique in that it belongs to viviparous fish. The distant "neighbors" of golomyankas can be called freshwater sponges growing on great depth. Their presence here is an exclusive phenomenon: they are not found in any other lake.

If the biosphere of the lake is presented in the form of a pyramid, then it will be crowned by the Baikal seal or seal, which is the only mammal in this reservoir. Almost all the time he lives in the water. The only exception is autumn, when seals lie en masse on rocky shores, forming a kind of "settlement". Many other inhabitants of Baikal also explore the coast and islands, for example, gulls, goldeneyes, shelducks, mergansers, white-tailed eagles and other birds. Characteristic for these places is such a phenomenon as coming to the coast, and in droves, brown bears. And in the mountainous Baikal taiga you can meet musk deer - the smallest deer on Earth.

Attractions of Baikal

Lake Baikal is so majestic that it is often called Siberian Sea. In 1996, it was listed by UNESCO as a World Heritage Site. world heritage. But not only due to the unique ecosystem that requires careful treatment - there are also many historical and architectural sights, not to mention natural and cultural monuments.

One of them is located near the lake, at the source of the Angara, a reserved rock called the Shaman-stone. It can be seen in the middle of the river, between capes Rogatka and Ustyansky. If you focus on the line of the Port-Baikal ferry crossing, then the rock will be 800 meters lower. Since ancient times, the Shaman-stone was endowed by the inhabitants of the Angara region with unusual power, they prayed near it and performed various shamanic rites.

Between the mainland and the Svyatoy Nos peninsula is perhaps the most famous bay on Baikal - Chivyrkuisky. Its area is approximately 300 km², it is the second largest on the lake, and it is also shallow (about 10 m deep). Thanks to the latter circumstance, the water in the bay warms up well, on average up to +24 degrees. On southwest coast there are such settlements as Kurbulik, Katun and Monakhovo. The main wealth of the bay is fish resources. Here you can find pike, perch, horned catfish, the weight of which can reach tens of kilograms. However, fishing on an industrial scale is prohibited - only amateur. The Chivyrkuisky Bay is also known for its thermal spring, one of the hottest: the temperature of the water used to treat diseases of the musculoskeletal system ranges from 38.5-45.5 ° C. The source is located in the Zmeina Bay, on the western side.

On northeast coast Lake Baikal is a tract belonging to the natural-geographical region Podlemorye. It is called Frolikha and includes the river of the same name, which flows into Baikal Bay Frolikha and flows out of the lake with the same name. In the river valley - its channel, by the way, crosses the famous a tourist route 95 km long - the Frolikhinsky nature reserve is located. Together with the Zabaikalsky National Park and the Barguzinsky Reserve, it is subordinate to the federal budget government agency"Reserved Podlemorie".

Other attractions:

• Northern Baikal is the last site on the great lake, the nature of which, due to its remoteness and lack of highways retains its originality
• Barguzinsky Bay is the largest and deepest in Baikal,
• Ushkany Islands is a small archipelago with rocky shores in the Barguzinsky district of Buryatia,
• Peschanaya Bay, known for its unique beauty,
• Cape Ryty - extreme north point coastline, where there are extensive pastures, and one of the most anomalous places,
• Cape Ludar, located near the old village of Zabaikalskoye,
• Chersky Peak - from its slopes the Slyudanka and Bezymyannaya rivers begin, flowing into Baikal,
• The Circum-Baikal Railway, which has historical significance.

Rest on Baikal

It was along the Circum-Baikal Railway in the 80s of the XX century that the Bureau of International Youth Tourism "Sputnik" (Irkutsk) developed the first ecological tour. Since that time, ecotourism on Baikal has been actively developing, despite the fact that tourism infrastructure here is not well developed, there are some transport difficulties. There are also problems associated with environmental pollution by emissions from the Baikal Pulp and Paper Mill. But all of them are to some extent compensated by the activities for the creation and arrangement of excursion trails, regularly held tourism organizations region.

The most favorable time for relaxing on the lake is from May to October. You can swim in July and August, since these months are the hottest - the air warms up to + 30 ° C, shallow water - up to + 25 ° C. Vacation on Lake Baikal will satisfy the needs of even the most demanding tourists. beach holiday, bike and car tours, hiking along the coast, rafting on catamarans and kayaks, quad biking and even helicopter tours - these are far from complete list what travel agencies offer to their customers. Climbing coastal cliffs and descending into caves are popular.

Fishing

Fishing should be mentioned separately. Many amateurs fish from the rocks adjacent to the lake. The most reckless anglers prefer to settle in specialized bases, of which there are many, and which differ in different levels of comfort. They go fishing on rented vessels. The most popular places for fishing on Baikal are the already mentioned Chivyrkuisky Bay, Mukhor Bay, the shallow bays of the Small Sea and, of course, the rivers flowing into it. The largest of them (besides the Selenga) are the Upper Angara, Snezhnaya, Barguzin, Kichera, Turka, Buguldeyka and Goloustnaya. And only one river flows out of the lake - the Angara.

Fishing, only now under the ice, finds its fans in the winter season, which here lasts from late December to mid-May. Fans of the "second Russian hunt" are helped by professional instructors: without them, it is difficult for inexperienced fishermen to do in an unusual transparent ice correct hole. They willingly share the secrets of how to organize a comfortable stay in the conditions of 40-degree frosts, which are not uncommon for Baikal. And those who do not want to test their health with extreme cold, go underwater fishing in March and April. At this time, the ice is still strong, and the air temperature begins to reach positive levels.

Winter sports

Of winter entertainment, tourists are also offered skiing. dog sledding(routes are very different both in complexity and length), snowmobile rides ( excursion programs are also different and depend on the level of preparedness of the riders), riding skiing, sledges and snowboards (you can rent ski equipment at numerous rental points on the coast). In winter, as, indeed, in summer, helicopter excursions are held in high esteem among vacationers, giving unforgettable impressions for a lifetime.

Children and youth tourism

Sufficiently developed on Baikal and children's tourism involving rest in summer camps. We will immediately please parents: your children will not be bored here. Staying in a children's institution involves a rich excursion and creative program, including the holding of sanatorium and health-improving events at specialized bases. One of the most convenient places on Lake Baikal for families with small children is Mandarkhan Bay. It is as if it was specially created by nature for this very purpose: it is very small, and in summer it is perhaps the most warm water and children are not at risk of catching a cold.

The youth is not left unattended. For her, the interregional public organization "Great Baikal Trail", established in 2003, implements various international programs, taking into account the specifics and needs of the age of up to 30. For example, the arrangement and reconstruction of ecological paths, holding educational lectures on nature conservation. Schoolchildren are also actively involved as listeners of the latter.

Video: The underwater world of Lake Baikal

Hotels and recreation centers on Lake Baikal

Many tourists come to rest on Baikal, as they say, savages, getting on their cars. They choose a place they like on the coast and stop there, spending the night in tents. There are very few campsites specially equipped for motorists on the lake. If you plan to stop at such a site, you should take into account that there may not be firewood and basic amenities (for example, a toilet) in this place. Therefore, think in advance about how you will “survive”.

Such experiences will be spared by those who prefer to travel in comfort, even minimal. At their service are many hotels, recreation centers and guest houses scattered along the entire coast of Lake Baikal. Moreover, each tourist will be able to find the most suitable accommodation option for him - taking into account, of course, individual preferences and financial capabilities. We are forced to upset the bohemian public: there are no five-star hotels with the highest level of service here. She, like "mere mortals", will have to be content with ordinary rooms with all amenities. Another note: some recreation centers accept tourists only in the summer.

Tourists traveling on their own run the risk of running into unscrupulous intermediaries when booking a hotel room or recreation center. To prevent this from happening, book a hotel room only through proven and reliable services, which will not only save you from scammers, but also allow you to rent a room at the lowest cost, without unnecessary markups. We recommend Booking.com, one of the first and most popular online hotel booking systems.

How to get there

There are various ways to get to Baikal. The starting point is usually the nearby big cities: Irkutsk, Ulan-Ude, Severobaikalsk. Tourists first come to one of these settlements and plan their further route in detail there. The trip on the section of the Trans-Siberian Railway between Ulan-Ude and Irkutsk is especially memorable: the lake stretches right outside the train windows and you can admire its magical panorama for hours.

One of the most popular places tourism on the Siberian Sea is the village of Listvyanka, located at the source of the Angara, it is 65 km from Irkutsk. From regional center you can get here by bus or boat, the travel time is a little more than an hour. All routes originate in Irkutsk water transport, plying not only on Baikal, but also on the Angara.

In the south of Eastern Siberia, where the Irkutsk region borders on Buryatia, there is one of the seven wonders of the world - the largest and deepest fresh water body in the world - Lake Baikal. locals used to call it the sea, because the opposite shore is often out of sight. This is the largest fresh water reservoir on the planet with an area of ​​​​more than 31 thousand km², which would completely fit the Netherlands and Belgium, and the maximum depth of Baikal is 1642 m.

Lake-record holder

The crescent-shaped reservoir has a record length of 620 km, and a width of different places fluctuates between 24-79 km. The lake lies in a basin of tectonic origin, so its relief bottom is very deep - 1176 m below the level of the World Ocean, and the water surface rises 456 m above it. The average depth is 745 m. The bottom is extremely picturesque - various banks, in other words, ancient shallows, terraces, caves, reefs and canyons, plumes, ridges and plains. It consists of great variety natural materials, including limestone and marble.

Above is the depth of Lake Baikal, according to this indicator, it is in first place on the planet. The African Tanganyika (1470 m) ranks second, and the Caspian (1025 m) closes the top three. The depth of other reservoirs is less than 1000 m. Baikal is a reservoir of fresh water, it is 20% of the world's reserves and 90% of Russia's. The tonnage of its mass is greater than in the entire system of the five Great Lakes of the United States - Huron, Michigan, Erie, Ontario and Superior. But the largest lake in Europe is still considered not Baikal (it is in 7th place in the world ranking), but Ladoga, which occupies 17,100 km². Some people are trying to compare the famous fresh water bodies in Russia and are wondering which lake is deeper - Baikal or Ladoga, although there is nothing to think about, since the average depth of Ladoga is only 50 m.

An interesting fact: Baikal takes in 336 large and small rivers, and releases only one from its embrace - the beautiful Angara.

In winter, the lake freezes to a depth of about a meter, and many tourists come to admire an exceptional sight - a transparent ice “floor”, under which blue and green water pierced by the sun splashes. The upper layers of ice are transformed into intricate shapes and blocks, carved by winds, currents and weather.

The famous Baikal water

Lake water was deified by the ancient tribes, they were treated with it and idolized. It has been proven that Baikal water has unique properties - it is saturated with oxygen and practically distilled, and due to the presence of various microorganisms, it is devoid of minerals. It is famous for its exceptional transparency, especially in spring, when stones lying at a depth of 40 meters are visible from the surface. But in summer, during the “blooming” period, the transparency decreases to 10. The waters of Lake Baikal are changeable: they shimmer from deep blue to rich green, these are the smallest forms of life that develop and give the reservoir new shades.

Baikal depth indicators

In 1960, researchers measured the depth near Capes Izhemei and Khara-Khushun with a cable lot and documented the most deep place Lake Baikal - 1620 m. Two decades later, in 1983, the expedition of A. Sulimanov and L. Kolotilo corrected the indicators in this area using echo sounding measurements and recorded new data - the deepest point was at a depth of 1642 m. Another 20 years later, in In 2002, an international expedition under the auspices of a joint project of Russia, Spain and Belgium worked on the creation of a modern bathymetric map of Lake Baikal and confirmed the latest measurements using acoustic sounding of the bottom.

The unique reservoir has always attracted the increased attention of scientists and researchers, who equipped more and more new expeditions in order to clarify the previous depth measurements in different parts of the reservoir. So, in 2008-2010, the Mir submersible expeditions organized about 200 dives throughout the entire water area of ​​this fresh sea. They were attended by prominent politicians and businessmen, journalists, sportsmen and hydronauts from the countries of Western and Eastern Europe and Russia.

Where are the deepest places of Baikal

Since the bottom of the reservoir is dotted with faults, the depth of the lake in different parts of the water area differs:

• near the western shores lie the deepest breaks in the earth's crust;
• in the southern part, the record depth of the depression between the mouths of the rivers Pereemnaya and Mishikhi was recorded at 1432 m;
• in the north, the deepest place is located between capes Elokhin and Pokoiniki - 890 m;
• depressions in the Small Sea - up to 259 m, their location at the Big Olkhon Gates;
• the greatest depth of Baikal in the region of the Barguzinsky Bay reaches 1284 m, this point is located at southern shores peninsula Svyatoy Nos.

Video: an interesting film about Lake Baikal

The unique ecosystem attracts scientists, researchers from different countries. Thousands of tourists go to the deepest lake in the world to enjoy the magnificence of landscapes, landscapes that you will not find anywhere else. The boundless diversity of flora and fauna of the region, among which are mostly endemics (found only here), complements the wealth that nature has given to people.

The younger generation had to write comprehensive work What is Lake Baikal famous for? 4th grade high school left in our memory not so much information. This is the most in the world, - people over forty will say. But this is not the only indicator that brings Lake Baikal into the category of champions. Well, let's update our information about this gem of Russia. It's not for nothing that the lake is called sacred sea! It is rightfully considered unique creation mother nature, pride and national treasure of Russia.

How natural object Baikal was included in 1996, at the twentieth session of UNESCO, in the World Heritage List of Humanity (number 754). What is the uniqueness of this lake? We will talk about this in our article.

Where is Lake Baikal located and what is famous for (briefly)

This natural unique attraction is located almost in the center of Asia. On the map of our country, the lake is located in Eastern Siberia, in its southernmost part. Administratively, it serves as the border between the Buryat Republic and the Irkutsk region of the Russian Federation. Baikal is so big that it can be seen even from space. It stretches like a blue crescent from the southwest to the northeast. Therefore, the local population often calls Baikal not a lake, but a sea. “Baigal dalai” is how the Buryats respectfully call it. The coordinates near the lake are: 53°13′ north latitude and 107°45′ east longitude.

What is Lake Baikal famous for? Let's look at its different parameters.

Depth

Let's start with common truths. Baikal is not only the most deep lake on the planet, but also the most impressive continental depression. This title was confirmed by scientific research conducted in 1983. The deepest place in the lake - 1642 meters from the surface of the water surface - has the coordinates of 53°14′59″ north latitude and 108°05′11″ east longitude. Thus, the lowest point of Baikal lies 1187 meters below sea level. And the lake has a height of 455 meters above the oceans.

The average depth of Baikal is also impressive: seven hundred and forty-four meters. Only two lakes in the world have an indicator of a kilometer between the water surface and the bottom. These are (1025 m) and Tanganyika (1470 m). The deepest - that's what Lake Baikal is famous for.

In English, in Google, a certain East is among the top three record holders. This lake was found in Antarctica. It has a depth of more than 1200 meters, and another four kilometers of ice rises above the water surface. Thus, we can say that the distance between the surface of the earth and the bottom of the East is more than five thousand meters. But this body of water is not a lake in the usual sense of the word. Rather, it is an underground (subglacial) reservoir of water.

Dimensions

The area of ​​this reservoir is 31,722 square kilometers. That is, the size of the lake is quite comparable with such European countries as Switzerland, Belgium or the Kingdom of the Netherlands. The length of Lake Baikal is six hundred and twenty kilometers, and the width varies between 24-79 km. At the same time, the coastline stretched for two thousand one hundred kilometers. And that's not counting the islands!

Dimensions - this is what Lake Baikal is famous for, although this indicator does not make it the largest on the planet. But the reservoir takes an honorable eighth place among the giants. Ahead are the Caspian (which is also a lake, although salty), the Upper in America, Victoria, Huron, Michigan, the Aral Sea and Tanganyika.

honorable age

Baikal is a lake of tectonic origin. This explains its record depth. But when did the tectonic fault occur? This question is still considered open among scientists. Traditionally, the age of Baikal is determined at 20-25 million years. This number seems fantastic. After all, lakes “live” on average about ten, in extreme cases, fifteen thousand years. Then alluvial deposits, silty sediments accumulate and change everything turns into a swamp, and it, after centuries, into a meadow. But Siberians are famous for their centenarians. And what Lake Baikal is famous for is its venerable age.

It should be said that the Siberian giant is also unique in other respects - hydrological. Baikal feeds about three hundred rivers, and only one flows out of it - the Angara. And one more uniqueness: seismic activity during a tectonic fault. From time to time, earthquakes occur at the bottom of the lake. In fact, the sensors record about two thousand of them annually. But sometimes there are large earthquakes. So, in 1959, from the shock, the bottom of the lake sank fifteen meters.

The Kudara earthquake of 1862 was the most memorable for the local residents, when a huge piece of land (200 sq. km) with six villages, in which one thousand three hundred people lived, went under water. This place in the delta is now called Proval Bay.

Unique fresh water tank

Despite the fact that the pearl of Siberia occupies only the eighth place in the world in terms of size, in terms of the volume of water it reaches the record. What is Lake Baikal famous for in this regard? Most of the water is in the Caspian. But it's salty in there. Thus, Baikal can be called the undisputed leader. It contains 23,615.39 cubic kilometers of water. This is about twenty percent of the total reserve of all lakes on the planet. To demonstrate the significance of this figure, let's imagine that we managed to block all three hundred rivers flowing into Baikal. But even then it would take Angara three hundred and eighty-seven years to drain the lake.

Unique fauna and flora

It is also strange that, despite the enormous depth of Baikal, there is benthic vegetation in the lake. This is due to seismic activity under the tectonic depression. Magma heats the bottom layers and enriches them with oxygen. Such warm water rises, and cold water sinks. Half of the 2600 species of animals and plants inhabiting the water area are endemic. Biologists are most surprised by the only mammal of the lake that lives 4 thousand kilometers from its marine counterparts and has adapted well to fresh water.

It is difficult to say which fish Lake Baikal is most famous for. Maybe it's a golomlyanka. She is viviparous. Her body contains up to 30 percent fat. She also surprises scientists with her daily migrations. come up for food dark depths in shallow water. The Baikal sturgeon, omul, whitefish, and grayling also live in the lake. And the bottom is covered with freshwater sponges.

Purity and transparency of water

With such an area of ​​the water surface and the presence of industrial enterprises nearby, it would be logical to think that Lake Baikal would become polluted. It wasn't there! The water here is not only drinkable, but close to distilled. You can drink it without fear. And it helps the lake to cleanse itself. This endemic one and a half millimeters in size acts as a natural filter: it passes water through itself, assimilating all the dirt. As a result, the pebbles at the bottom are clearly visible. Water transparency up to forty meters is what Lake Baikal is famous for. The photo of this unique reservoir demonstrates the majestic pristine beauty of nature. It depends on us whether we save it for posterity.