Located in the arms of Echoing-Sand Dune, China, Crescent Lake is a spring in the shape of a half moon. It has existed for at least two thousands years alongside Echoing-Sand Dune, never drying up. Crescent Lake is beautiful and clear. It is 218 meters long from east to west and 54 meters wide from north to south. The average depth of the lake is 1.09 meters. The res...ulting view of lake and grass embedded in the endless desert is a magnificent one.