National Geographic : 1924 Jul
Official Photograph, U.S.Army Air Service AN AMERICAN SAHARA FROM THE AIR Huge sand dunes in the floor of Death Valley, California, are formed, reformed, and ever change, because ofthe aircurrents that sweep infrom the adjoining canyons. Sometimes these dunes are 200 feet high. Looking down upon the valley floor, the aviator canseeadozen ormore whirl winds, denoted by the clouds of sand. "Death Valley from the air does not differ in appearance from valleys immediately adjoining itoneither side. It is, however, considerably lower. Most of it is at about sea-level, but near the center, over which we passed, thereisasink that isdepressed 271feet below the level of the sea, and is the lowest point of dry land in the United States. Just to the north of this sink, Furnace Creek enters thevalley from the Funeral Range on the east, but, except for brief periods immediately following heavy rains, which are extremely rare, there arenosigns of water in either sink or creek."-Stevens and Macready.