The megalake holds the Guinness World Record for the largest known lake on Earth. It extended over an immense area of 2.8 million square kilometers, eclipsing even the vastness of the modern ...
It is 1,200 feet (370 m) deep, making it one of the deepest lakes in Russia, according to NASA's Earth Observatory. In the astronaut photo, Kol'tsevoye Lake looks as if it has been covered by low ...