The Geology of Crater Lake National Park, Oregon With a reconnaissance of the Cascade Range southward to Mount Shasta by Howell Williams
The Parasitic Scoria Cones of Mount Mazama
The Younger Cones
Southeast Comer Cone
Two miles from Diller Cone, in the southeast corner of the park, a small hillock of red and black scoria including a few bombs 5 feet across rests on the dacites of Grayback Ridge. No trace of a crater remains.
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