U.S. Geological Survey climbing party ascending the
Klutlan Glacier en route to 4,766- m (15,636 ft)-high Mount
Churchill. This volcano was the site of two of the most
voluminous explosive eruptions in North America in the past
2,000 years. View is to the southwest. Photo by R.
McGimsey, U.S. Geological Survey, May 16, 1990.
Image courtesy of AVO / U.S. Geological Survey.
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