A volcano built by a single eruption.

Diamond Craters

Submitted by admin on Wed, 09/29/2010 - 03:11

 


Diamond Craters is a monogenetic volcanic field in southeast Oregon. The volcanoes are all Quaternary in age. Lava flows and tephra from the volcanoes cover an area of about 23 square miles (60 square km). This photo shows Keyhole Crater. Special thanks to Rosemary Kenney.