The Singing Sand Mountains are situated in Dunhuang in western China. As one of the coolest natural phenomena on     1     planet, the dunes sound as if they are singing to you as you slide down them.     2     (locate) between the tall dunes, there is a little miracle. This spring,     3     looks like a moon, has been there for thousands of years and has never dried up. The spring, even with the shifting sand,     4     (remain)blue year-round.

Climbing to the top of the dunes is hard work, but worth it. Rent a pair of bright-orange shoe protectors or just shake your     5     (shoe) out later as most people do. A wooden walkway is half buried in the sand so you can get a proper footing on the deep sand.

The dunes are a tourist     6     (attract), with dune cars, dune surfing, and helicopter flights. However,     7     (appreciate) the sandy scene in peace is not hard to hike away. The dunes look most attractive either in the morning     8     towards dusk.

The drive down the dunes is also     9     (surprise) as the large mountains of sand     10     (sudden) appear at the end of the road.