I took bus No 3 to the Mingshashan—Yueyaquan National Park in Echo Sand mountain (鳴沙山) to see crescent moon spring (月牙泉）and hike on sand dunes. I saw people sand-boarding which I did in Peru.
The Echoing-Sand Mountain is known as one of the Eight Great Landscapes of Dunhuang and one of the Four Great Singing Sands of China. Completely piled by sands, the mountain stretches for 40 km in length and 20 km in width respectively, with the highest point reaching 250 meters. When there is wild wind, the sands will be blown up and make loud sound that no one knows the causes. In1990, more than 200 people were divided into four groups to slid down the Echoing-Sand Mountain that created sounds ranked between 54 db and 67 db.
The Crescent Lake is shaped half-moon and extends for 100 meters by 25 meters and has a deepest point of 5 meters. Compared to its annual evaporation capacity of 2400 mm, Crescent Lake has an annual amount of precipitation of only 50 mm. However, the particular geographic landform around it prevents it from being buried in the desert; on the other hand, the underflows beneath it also ensure continuous source for it.
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