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
flagUkraine
12%
0%
4%
83%
24
flagSpain
11%
2%
6%
77%
44
flagRussia
3%
3%
11%
76%
26
flagDenmark
14%
3%
14%
67%
28
flagAustria
20%
5%
8%
65%
35
flagthe Netherlands
14%
5%
15%
64%
57
flagNorway
21%
1%
15%
61%
52
flagPoland
20%
6%
12%
59%
19263
flagthe United Kingdom
21%
5%
12%
58%
579
flagCanada
17%
10%
13%
57%
87
flagRepublic of Ireland
24%
5%
12%
57%
57
flagItaly
27%
6%
10%
56%
48
flagGermany
25%
2%
15%
55%
253
flagAustralia
29%
3%
12%
54%
55
flagFrance
22%
6%
15%
54%
44
flagSweden
18%
7%
22%
51%
27
flagthe United States
26%
8%
13%
50%
794
flagUnknown
27%
9%
13%
49%
490
flagIndia
29%
17%
16%
35%
164

Gender

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

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answers
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Which lake is the oldest in the world?
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