Geological Survey (U.S.)Surveyed in 1925.; Relief shown by contours, shading, and spot heights.; Shows roads, campgrounds, tunnel, waterholes, caves and other natural features.; In upper margin: "State of Idaho, Bureau of Mines and Geology."; "Datum is mean sea level."; "North American datum."; "5000 yard grid based upon U.S. zone system F."; "Contour interval 10 feet."; On verso: text and ill.65 x 46 centimetersJPEGUMN_ALMA:9959265070001701engU.S. Geological Survey (Washington, D.C)PublicCraters of the Moon National Monument, IdahoMapsIdaho--Craters of the Moon National MonumentIdahoUniversity of Minnesota