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
7%
3%
0%
89%
28
flagUkraine
13%
0%
4%
82%
23
flagRussia
4%
4%
8%
79%
24
flagSpain
11%
2%
6%
76%
43
flagAustria
15%
6%
9%
68%
32
flagDenmark
14%
3%
14%
67%
28
flagthe Netherlands
15%
5%
15%
63%
52
flagPoland
20%
6%
12%
60%
16934
flagBelgium
8%
8%
21%
60%
23
flagthe United Kingdom
22%
5%
13%
58%
534
flagRepublic of Ireland
23%
5%
12%
58%
55
flagNorway
21%
2%
17%
58%
46
flagGermany
26%
2%
13%
57%
236
flagCanada
17%
10%
13%
56%
86
flagItaly
28%
6%
8%
55%
45
flagFrance
21%
7%
16%
54%
42
flagUnknown
25%
5%
15%
53%
113
flagAustralia
30%
4%
12%
53%
49
flagthe United States
26%
9%
13%
48%
738
flagIndia
29%
18%
15%
36%
144

Gender

men58%
women55%
Caspian Sea
20%
22%
Lake Superior
7%
7%
Lake Victoria
13%
14%
Lake Baikal
58%
55%

Language versions

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answers
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Which lake is the oldest in the world?
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