The snow-drapped symmetrical cinder cone at the left side of the photo is Sunset Crater, Arizona's most recently active volcano. The broad snow-capped mountain in the background to the west, behind and to the right of Sunset Crater, is San Francisco Mountain. It is the centerpiece of the San Francisco Mountain volcanic field, which covers 5000 km² of northern Arizona. The massive eroded Pleistocene stratovolcano is Arizona's highest peak. The peak on the right horizon is O'Leary Peak, a Pleistocene rhyodacitic lava dome complex.

Photo by Ed Wolfe, 1970 (U.S. Geological Survey).

This image is made available as a Public Domain Work, but proper attribution is appreciated.

San Francisco Volcanic Field