Lake Baikal (Buryatian: бакалнур, Mongolian: байгалнъ)

With a total volume of 23.6 trillion cubic meters (20 15) and the deepest point of 1637 meters (20 15), it is the deepest lake in the world and the largest freshwater lake in Eurasia. The lake is 636 kilometers long, with an average width of 48 kilometers and an area of 3 1.500 square kilometers. It is formed by stratum collapse, with an altitude of 455 meters and an average water depth of 730 meters.

Lake Baikal in China, called Beihai in ancient times, is known as the "Pearl of Siberia". UNESCO registered Lake Baikal as a world natural heritage in 1996.

Lake Baikal is injected by 336 rivers, including the Selenger River, with a catchment area of 557,000 square kilometers. The Angara River, a tributary of the Yenisei River, flows from here, and there are 27 small islands in the lake. Because it was not covered by Quaternary glaciers, the lake also preserved tertiary freshwater animals, such as Baikal seals, whitebait, Amur fish, sharks and so on. The lake is an important fishing ground in Siberia, which has a great influence on the climate in this area.