Yardang
Yardang landform is a typical wind erosion landform. Consisting of a series of parallel ridges and grooves, extending along the prevailing wind direction; half a meter to several meters high, tens to hundreds of meters long; groove width 1-2 meters; Due to the abrasive effect of the wind, the lower part of the small hill often suffers from strong denudation and gradually forms a concave shape. If the rock
stratum on the upper part of the hill is relatively loose, it will easily collapse under
the action of gravity to form a steep wall, forming a Yadan landform.
