Lake Baikal – Located in nearly 400 miles through south-eastern Siberia, north of the Mongolian border, Russia. Above 5,000 feet deep (1637m) at its most deep, with another four-mile-thick layer of sediment further down, the lake’s cold, oxygen-rich waters swarm with bizarre life-forms. The Lake is surrounded by mile-high snowcapped mountains. Lake Baikal still offers vistas of supreme beauty. The mountains are still a heaven for wild animals, and the small villages are still bases of tranquility and independence in the remote Siberian taiga. It covers 20% of the world’s total unfrozen freshwater reserve. Identified as the ‘Galapagos of Russia‘, its age and separation have produced one of the world’s richest and most rare freshwater faunas, which is of excellent value to evolutionary science. The Lake is comes under UNESCO World Heritage Site.