Global Volcanism Program | Image GVP-03132
The middle of three cinder cones and flat-lying andesitic lava flows near Davis Lake is seen here from Black Rock Butte, the southernmost cinder cone, with the Pleistocene andesitic shield volcano of Hamner Butte in the background. The middle lava flow has a radiocarbon age of 4740 years. The cinder cone vent of the middle flow has a flat summit that has been quarried for road aggregate.
Photo by Lee Siebert, 1995 (Smithsonian Institution).