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).
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Caspian Sea
Lake Superior
Lake Victoria
Lake Baikal
answers
flagLithuania
6%
4%
2%
86%
43
flagRussia
3%
3%
9%
81%
32
flagSpain
11%
2%
6%
77%
45
flagDenmark
10%
5%
10%
74%
39
flagRepublic of Ireland
21%
4%
9%
64%
74
flagthe Netherlands
16%
6%
15%
61%
65
flagPoland
20%
6%
12%
59%
21806
flagItaly
27%
4%
8%
59%
72
flagNorway
21%
3%
15%
59%
57
flagAustria
22%
6%
11%
59%
44
flagthe United Kingdom
22%
5%
13%
58%
671
flagSweden
16%
6%
19%
58%
31
flagGermany
23%
2%
15%
57%
311
flagAustralia
28%
3%
11%
57%
63
flagCanada
19%
11%
11%
55%
101
flagFrance
22%
8%
16%
53%
49
flagthe United States
26%
9%
12%
50%
944
flagUnknown
27%
9%
13%
49%
576
flagIndia
32%
15%
15%
36%
220
flagthe Philippines
30%
13%
16%
36%
30