The Ming Sha Dune Field near Dunhuang, western Gansu Province, China. These 400+ ft. (120+ m) dunes are part of the Kumtag Desert (a section of the larger Taklamakan Desert). These dunes "sing" (although I never had the chance to hear it!). The famous Mogao Grottoes lie along the edge of this field. #geology #geoscience #china #gansu #desert #naturalhistory #sedimentology