Dunhuang crescent moon spring, the crescent moon spring located at the Dunhuang southwest 5 kilometers place, is in a mysterious endless desert lake water marvelous sight. Under Mt. Mingsha, the water seepage forms a lake, in the sand dune surrounds, resembles a curved crecent moon to acquire fame the crescent moon spring. The crescent moon spring, the ancient name sand well, the common name medicine spring, from the Han Dynasty “the Dunhuang eight scenery” one, acquires fame “the month spring dawn penetrating”. Crescent moon spring north and south long nearly 100 meters, thing wide approximately 25 meters, east water seepage west depth shallow, the most deep place the approximately 5 meters, the curving like crecent moon, therefore acquires fame. Bay spring, the ripples linger, blue like jadeite. the spring in the wind-drift sand, the drought does not dry up, the wind sandstorm does not fall, affords a marvellous view. All previous dynasties scholar to this unique mountain spring landform, desert marvelous sight commendation. Because the crescent moon spring “the spring reflects the month, but dustlessness”, “through ancient times the sand does not fill in the spring, the spring is not dried out” becomes the marvelous sight. “the clear and boundless sky luxuriant blue sky, the US this world crescent moon spring, around Mt. yinshan the sand surrounds certainly, a clear duck ripple”. The crescent moon spring has wonderfully four: Shape of eternity the crescent moon, place of pure running water Cheng in Quan, the Shashan wicked boundary will not flood Yu Sha, the ancient deep pool old fish food not to be old as before. Goes to the Mt. Mingsha crescent moon spring to play by the evening, the toward evening is best.