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
100
Italy
66
Republic of Ireland
47
Switzerland
50
Ukraine
22
Germany
707
Australia
99
Poland
21862
the Netherlands
44
Greece
47
Canada
71
France
21
the United States
988
the Philippines
41
the United Kingdom
336
Pakistan
35
India
294
Unknown
25
Nigeria
20