Cavers enter a vertically oriented steam vent cave within the crater of Mount St. Helens for the first time. Crater Glacier, Mount St. Helens Volcanic Monument, Washington State. 2014
Cavers enter a vertically oriented steam vent cave within the crater of Mount St. Helens for the first time. Crater Glacier, Mount St. Helens Volcanic Monument, Washington State. 2014
Published June 29, 2015 at 773 × 1100 in Glacier Caves
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