Parks,areas in Billings County, North Dakota
Anderson Coulee Oil Field Badlands Scenic Area Big Stick Oilfiled Big Top Research Natural Area Buckhorn Oil Field Devils Pass Oil Field Elkhorn Ranch Oil Field Elkhorn Ranch State Historic Site Fryburg Oil Field Little Missouri Badlands Magpie Oil Field Medora Oil Field Scoria Oil Field Sully Creek State Primitive Park Theodore Roosevelt National Memorial Park Theodore Roosevelt National Memorial Park Theodore Roosevelt Oil Field Two Top Research Natural Area