An almost-constant steam plume rises from the 500-m-wide summit crater of Mount Martin. High heat flux at the summit keeps the crater largely free of snow and ice despite the extensive glacial cover on the rest of the volcano. A small lake sometimes forms on the crater floor.

Copyrighted photo by Katia and Maurice Krafft, 1978.

Copyrighted image used with permission. All Rights Reserved. Contact photographer for any usage requests.

Martin