Which lake is the oldest in the world?
Caspian Sea
Lake Superior
Lake Victoria
Lake Baikal
Lake Baikal is the deepest and the oldest lake, at least 25 million years old. It was formed as an ancient rift valley. Due its age, size and isolation, it hosts about 1000 endemic species of plants and animals (which can be found nowhere else in the world).
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Answers by country
Caspian Sea
Lake Superior
Lake Victoria
Lake Baikal
answers
Russia31
Austria105
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Ukraine22
Germany770
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Australia99
Poland22081
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Greece47
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Canada72
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Unknown25
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