The Pryor Mountains lay east of Red Lodge and south of Billings. The type of terrain that makes up the Pryors consist of flat benches, high deserts, mesas, buttes and deep limestone canyons. It is partially forested. The Pryor mountain range is also host to the Pryor Mountain Wild Horse Range, created in 1968 to protect what has been called America's spirit of the West, the wild mustang. The range is home to 120 wild mustangs. These mountains are also of deep cultural value to the Crow Tribe of Native Americans, whose rock art can be found in the area.