Global Volcanism Program | Image GVP-03015
The unnamed cinder cone at the lower right, viewed from Bear Butte to the NW, was the source of a 13-km-long lava flow that traveled to the west down Jefferson Creek in the center of the photo. The lava flow overlies the northern lobe of a 6500-year-old flow from Forked Butte, another Holocene cinder cone south of Mount Jefferson. The Forked Butte lava flow divided into lobes that traveled on either side of Sugar Pine Ridge in the background.
Photo by Willie Scott, 1972 (U.S. Geological Survey).