Black Volcano

Black Volcano is an extinct volcano in the Albuquerque Volcanic Field in New Mexico, located directly north of JA Volcano. The second of five volcanoes in the western part of Petroglyph National Monument, it forms a rare line of vents along a single fissure together with JA and Vulcan. The rock is olivine tholeiite basalt, radiometrically dated to roughly 156,000 years old. The landscape is marked by lava flows, a small cinder cone, and a large filled-in crater, while smaller craters can be found on the summit and the northeastern flank. In the northern part of the cone you'll find xenoliths, or partially melted sandstone that was carried to the surface during the eruption.