The view of three unidentified gentlemen standing by a waterfall that splashes into the Colorado River located in the rocky Grand Canyon. Located in Arizona, the Grand Canyon was carved by erosion from the Colorado River, which resultantly left the canyon an estimated 277 miles long, a mile deep, and up to 18 miles wide. Today, about two billion years of geological history has been exposed at the canyon.
From the Army Mapping Service Aerial Photographs of Southern and Western Nevada (PH-00285). Aerial photographs, composites, and indices. Aerial photographs, Quad. Bonelli 4, U.S. Department of the Interior Geological Survey, Army Map Service. State: Arizona - Nevada. Flight Scale I-47200Project-GS-LJ. Index copied -8-26-50. Flying Comp. -7-26-50
From the Army Mapping Service Aerial Photographs of Southern and Western Nevada (PH-00285). Aerial photographs, composites, and indices. High altitude aerial photographs, Quad. Boulder Canyon 4, State: Arizona - Nevada. U.S. Geological Survey, Army Map Service. Flight Scale I-47200Project-GS-LJ. Index copied -8-26-50. Flying Comp. -7-26-50