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%
5%
2%
85%
40
flagUkraine
11%
0%
3%
84%
26
flagRussia
3%
3%
9%
80%
31
flagSpain
11%
2%
6%
77%
45
flagDenmark
11%
5%
11%
72%
36
flagRepublic of Ireland
22%
4%
10%
63%
68
flagthe Netherlands
16%
6%
14%
62%
62
flagPoland
20%
6%
12%
59%
20868
flagItaly
28%
4%
8%
58%
67
flagNorway
21%
3%
16%
58%
56
flagthe United Kingdom
22%
5%
13%
57%
640
flagAustria
23%
7%
11%
57%
42
flagGermany
24%
3%
15%
56%
283
flagCanada
19%
10%
12%
56%
97
flagAustralia
28%
3%
11%
55%
59
flagSweden
17%
7%
21%
53%
28
flagFrance
22%
8%
16%
52%
48
flagthe United States
26%
8%
13%
50%
888
flagUnknown
27%
9%
13%
49%
544
flagIndia
32%
15%
15%
36%
194

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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