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Location: 25 kilometers southeast of Dunhuang and near to Mogao Grottoes
Description: Sighing Sand Dune starts from Mogao Grottoes in the east. It is 40km from east to west, and 20 from south to north. The dune is with an elegant shape. When people slide down along the slopes, a sound will be heard, hence the name.
Crescent Spring is surrounded by the sand dunes with the shape of crescent. It is a miracle that the spring has never dried up over the past thousand years.
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