Lake Baikal – Siberia, Russia--the deepest lake in the world

Lake Baikal is in Southern Siberia in Russia, located between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast, near the city of Irkutsk. It is also known as the "Blue Eye of Siberia". It contains more water than all the North American Great Lakes combined.
At 1,637 meters (5,371 ft), Lake Baikal is the deepest lake in the world,[3] and the largest freshwater lake in the world by volume.[4] However, Lake Baikal contains less than one third the amount of water as the Caspian Sea which is the largest lake in the world.
Situated in south-east Siberia, the 3.15-million-ha Lake Baikal is the oldest (25 million years) and deepest (1,700 m) lake in the world. It contains 20% of the world's total unfrozen freshwater reserve. Known as the 'Galapagos of Russia', its age and isolation have produced one of the world's richest and most unusual freshwater faunas, which is of exceptional value to evolutionary science.