Lake Baikal in Siberia: The deepest lake on Earth holds 20% of the world's unfrozen freshwater and is 25 million years old
Lake Baikal in Siberia: The deepest lake on Earth holds 20% of the world's unfrozen freshwater and is 25 million years old
Lake Baikal in Siberia: The deepest lake on Earth holds 20% of the world's unfrozen freshwater and is 25 million years old
