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
Russia
30
Austria
105
Republic of Ireland
50
Italy
66
Switzerland
53
Ukraine
22
Germany
732
Australia
99
Poland
21966
Greece
47
the Netherlands
45
Canada
72
France
21
the United States
1003
the Philippines
42
the United Kingdom
339
Pakistan
35
India
296
Unknown
25
Nigeria
20