Geological cross-section of the eruption of a glowing avalanche on Mount Mazama. The view is to the west, with Mount Mazama on the left and the Pumice Desert area on the right.
Geological cross-section of the eruption of a glowing avalanche on Mount Mazama. The view is to the west, with Mount Mazama on the left and the Pumice Desert area on the right.
Illustration based on drawings depicting the culminating eruptions done by Howell Williams appearing on page 104 of "The Geology of Crater Lake National Park".; Abbr=WE