Crescent Moon Spring
In the same area as the Echoing Sand Dune in Dunhuang is the shallow spring fed Crescent Moon Spring, also known as Crescent Moon Lake, which forms an oasis at the desert's edge. The spring’s crescent moon shape gives it its name, and the pool is able to withstand the extreme dryness of the Gobi, refusing to dry up.
A peculiar natural phenomenon occurs when standing on top of the sand dune. If it's a windless day, a sound similar to a flute can be heard, but if there are many people descending the dune at once it becomes a thunderclap. The corresponding legend goes that a horrific sand storm buried an army that rested at this oasis and the sounds heard are those of the buried men trying to claw their way to freedom. It's best to go there in the late afternoon when it's a lot cooler.
Time needed for a visit: around 1 hour