Ubehebe Crater, Volcanic crater in Death Valley National Park, United States.

Ubehebe Crater is a half-mile-wide, 500-to-777-foot-deep volcanic crater at the north tip of the Cottonwood Mountains in Death Valley National Park. Its walls expose reddish-orange Miocene conglomerate with limestone, mudstone, quartzite and volcanic cobbles, yellowish on the left and orange on the right, separated by a fault.

Ubehebe is the largest and last of a series of steam-blast eruptions in its volcanic field, where rising magma met groundwater and flashed it to steam. The blast exceeded the tensile strength of the bedrock by ten times. Estimates of its age range from 2,000 to 7,000 years, with a 2012 study suggesting it may be as young as 800 years.

The crater sits in the Ubehebe Craters volcanic field, whose name geologists apply to the whole group of maars and the Little Hebe spatter cone south and west of the main pit. The Timbisha Shoshone name Tem-pin-tta-Wo'sah is recorded for the crater, tying the landmark to the tribe's homeland in Death Valley.

Three trails start at the crater: one descends to the bottom of Ubehebe, one circles the rim, and one leads to Little Hebe. Winds at the rim often gust above 50 mph (80 km/h). There is no restroom at the site.

A base surge from one of Ubehebe's explosions left a doughnut-shaped cloud of hot ash and gas that raced at an estimated 100 to 200 mph close to the ground, plastering the Ubehebe-facing side of every object in the area. Fallout debris near the rim is up to 80 feet thick.