Geographic location
Antarctic
25
Greenland
11
Okhotsk
10
Arctic
9
New Zealand
8
Pacific
8
Victoria Land
8
Newfoundland
7
Indian
6
Krafla
6
Norway
6
Vestmannaeyjar
6
Canada
5
Heimaey
5
South Shetland Islands
5
Deception Island
4
Eldfell
4
Mývatn
4
Southern Ocean
4
Sudar
4
West Antarctica
4
Bay of Plenty
3
East Antarctica
3
Hebron
3
Kerguelen
3
Kerguelen Islands
3
Laki
3
Mid-Atlantic Ridge
3
Northwest Territories
3
Nunavut
3
Port Foster
3
Priestley
3
Stanley Patch
3
White Island
3
Îles Kerguelen
3
Barents Sea
2
Blow Me Down
2
Borgarhraun
2
Byrd
2
Dundas
2
Ellesmere Island
2
Eureka
2
Jama
2
Kamchatka Peninsula
2
Kiruna
2
Lister
2
Marie Byrd Land
2
Marsden
2
Napier
2
North Cape
2
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