The sand hill surrounding Crescent Lake is known as Echoing-sand Hill. The hill was named so because when the wind blows, the sand granulates flies and make the sound like singing. The hill is formed by loose sand. And the sand of the hill take five different colors: red, yellow, green, white and black. The hill stretches some 20 kilometers from east to west and more than 20 kilometers from south to north. The highest peak is over 170 meter tall.
The rolling ranges of Echoing-sand Hill looks glittering yellow when it is sunny. It is as smooth as silk and as quiet as an autistic girl. When the light breeze arise, the hill will sing like the sound of orchestral music instruments. But when the wind blows, the hill will becomes a crazy guy.