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%
85%
35
flagUkraine
12%
0%
4%
83%
24
flagSpain
11%
2%
6%
77%
44
flagRussia
3%
3%
11%
76%
26
flagAustria
15%
6%
9%
68%
32
flagDenmark
14%
3%
14%
67%
28
flagthe Netherlands
14%
5%
14%
66%
56
flagNorway
21%
1%
15%
60%
51
flagPoland
20%
6%
12%
59%
18488
flagthe United Kingdom
21%
5%
13%
58%
549
flagCanada
17%
10%
13%
57%
87
flagRepublic of Ireland
24%
5%
12%
57%
57
flagItaly
28%
6%
8%
56%
46
flagSweden
20%
8%
16%
56%
25
flagGermany
26%
2%
14%
55%
243
flagFrance
21%
7%
16%
54%
42
flagAustralia
31%
3%
11%
52%
51
flagUnknown
27%
9%
12%
50%
446
flagthe United States
26%
9%
13%
49%
775
flagIndia
29%
18%
14%
36%
148

Gender

men56%
women54%
Caspian Sea
22%
22%
Lake Superior
8%
7%
Lake Victoria
13%
14%
Lake Baikal
56%
54%

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answers
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Which lake is the oldest in the world?
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