Black Dome is the second highest point on the west end of the Tank Mountains, located in the northwestern Sonoran Desert in northeastern Yuma County, Arizona, and 57 mi east northeast of the city of Yuma, Arizona. The western two-thirds of the Tank Mountains, including Black Dome, are located in the Kofa National Wildlife Refuge which is managed by the U.S. Fish and Wildlife Service. The east–west trending Tank Mountains lie next to the Kofa Mountains to the northwest.