Metal benchmark keychain for Canyonlands National Park. The U.S. Geological Survey benchmark was placed at Upheaval Dome in 1951. The elevation at that location is 5700 ft. above sea level.
Metal benchmark keychain for Canyonlands National Park. The U.S. Geological Survey benchmark was placed at Upheaval Dome in 1951. The elevation at that location is 5700 ft. above sea level.