Geographic location
New Zealand
19
Krafla
18
Reykjanes
10
Pacific
8
Horne
7
Nesjavellir
6
Prieto
6
Roland
5
Brigham
4
Hengill
4
Ida
4
Canada
3
Combs
3
Lippmann
3
Stefansson
3
Adak
2
Arctic
2
Atkinson
2
Conway
2
Fitzgerald
2
Long Valley
2
Pauzhetka
2
Valles
2
Anchorage
1
Argentina
1
Atka
1
Bailey Bay
1
Barnes Lake
1
Bell Island
1
Bering Sea
1
Clear Lake
1
Correa
1
Fournier
1
Gustavo
1
Hawthorne
1
Huslia
1
Kathleen
1
Lambda
1
Laugarnes
1
Menzies
1
Mossman
1
Neri
1
Paratunka
1
Podium
1
Reno
1
Rivera
1
Seltjarnarnes
1
Smith Island
1
Steamboat
1
The Podium
1
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