National Geographic Travelのインスタグラム(natgeotravel) - 12月29日 23時21分

The vast dunes of the Khongoryn Els sand dunes in #Mongolia's Gobi Gurvansaikhan National Park dwarf a couple of travelers trying to listen to the "singing" of the sands under their footsteps (for which these dunes are known). Photo by @magnumji

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