Weekly Photo Challenge: Boundary (Resonant Sand Desert)

This is a boundary between the desert and the non- desert ( is there a word for it?)

This is as far as horses and cars can go; as far as trees and grass can establish.

As far as rivers will run.DSCF2241

Beyond this, the sand dunes start; when the wind blows, it sings as the sand shifts.

That’s why they call it Resonant Sand Desert.

It is in Inner Mongolia, China.