"These volcanic craters are a fascinating geology lesson on the forces that helped form Death Valley. A short loop hike around the large Ubehebe Crater and the several smaller ones allows you to witness the complex erosion patterns that have occurred since the craters’ geologically recent birth.

The volcanic region at the north end of the Cottonwood Mountains, near Scotty’s Castle, is evidence of geologically recent cataclysmic events in Death Valley. The huge Ubehebe Crater was created around 300 years ago when magma heated groundwater and the pressure from the resulting steam blew the overlying rock away. This explosion covered 6 square miles of desert with volcanic debris 150 feet deep. Called a maar volcano by geologists, Ubehebe is a crater without a cone."

--Bill and Polly Cunningham, Best Easy Day Hikes: Death Valley National Park (Falcon Guides).

"This is a short loop hike around the large Ubehebe Crater and several smaller ones, as well as a down-and-back hike to the bottom crater. The volcanic region at the north end of the Cottonwood Mountains, near Scotty’s Castle, is evidence of recent cataclysmic events in Death Valley, geologically speaking. The huge Ubehebe Crater was created around 3,000 years ago when magma heated groundwater and the pressure from the resulting steam blew the overlying rock away.This explosion covered 6 square miles of desert with volcanic debris 150 feet deep. Called a maar volcano by geologists, Ubehebe is a crater without a cone. The rim has been eroding ever since the explosion, gradually filling the crater with alluvial fans."

--Bill & Polly Cunningham, Hiking California's Desert Parks (Falcon Guides).