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).

Answers distribution

Caspian Sea
Lake Superior
Lake Victoria
Lake Baikal
answers
flagLithuania
8%
2%
2%
86%
36
flagSpain
11%
2%
6%
77%
44
flagRussia
3%
3%
11%
77%
27
flagDenmark
14%
3%
14%
67%
28
flagthe Netherlands
15%
5%
15%
64%
59
flagRepublic of Ireland
22%
4%
11%
60%
61
flagNorway
21%
1%
16%
60%
55
flagPoland
20%
6%
12%
59%
19977
flagthe United Kingdom
21%
6%
13%
58%
606
flagItaly
25%
5%
9%
58%
51
flagAustria
25%
7%
7%
58%
39
flagBelgium
12%
8%
20%
58%
24
flagCanada
18%
9%
13%
57%
91
flagGermany
25%
3%
16%
55%
260
flagAustralia
28%
3%
12%
55%
56
flagFrance
21%
8%
17%
53%
47
flagSweden
18%
7%
22%
51%
27
flagthe United States
26%
8%
13%
49%
831
flagUnknown
27%
9%
13%
49%
513
flagIndia
31%
16%
16%
35%
177

Gender

men55%
women54%
Caspian Sea
22%
23%
Lake Superior
8%
7%
Lake Victoria
13%
14%
Lake Baikal
55%
54%

Language versions

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answers
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Which lake is the oldest in the world?
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