View of the summit crater of 1,863-m (6,112 ft)-high Mount Martin volcano, a largely
ice-covered stratovolcano at the southern end of the Katmai group. Note the sulfur (yellow)
that has been deposited on the snow- and ice-covered crater walls. Photograph by C. Neal, U.S. Geological Survey, June 4, 1990.
Image courtesy of AVO / U.S. Geological Survey.
Please cite the photographer and the Alaska Volcano Observatory/U.S. Geological Survey when using this image.
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