Amboy Crater

Amboy Crater is a dormant cinder cone volcano that rises above a 70-square-kilometer lava field in the eastern Mojave Desert of southern California, within Mojave Trails National Monument.It is about 75 miles equidistant from Barstow to the west and Needles to the east, and 1.5 miles south of historic U.S. Route 66, near the town of Amboy in San Bernardino County. In 1973, Amboy Crater was designated the Amboy Crater National Natural Landmark.

Source: Wikipedia