The Dee Wright Observatory is a stone memorial to the famed architect Dee Wright. It is located in the middle of a massive lava flow and offers panoramic views of the Cascade Mountain Range, as far north as Mt. Hood. Glaciated diktytaxitic basalt flows of the High Cascade platform.
Escarpment faces west.
Lavas on creast are 5-6 million years old. Glaciated basaltic andesite cinder cone. Ridge east of cone is a lateral moraine. Late Pleistocene basaltic andesite volcano. Probably was the site of spectacular lava fountains and eruptions of unusually large and abundand volcanic bombs during the late Pleistocene.