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
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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.
