T.CLDA caldera

a depression measuring kilometers across formed by the collapse of a volcanic mountain

52 features in 14 countries.

#CountryFeaturesShare of the world
1Northern Mariana IslandsMP25
2EthiopiaET6
3PortugalPT6
4Cabo VerdeCV3
5SpainES2
6Equatorial GuineaGQ2
7IndonesiaID1
8IcelandIS1
9ItalyIT1
10JapanJP1
11MexicoMX1
12French Southern TerritoriesTF1
13United StatesUS1
14SamoaWS1
Total52