In short, Barkhan is a dune pile in the shape of a moon. It can be given as an example of wind deposition. It is formed by the effect of external forces and occurs by the effect of wind. Barkhan is known as the most common dune form. It is generally convex.
Hamada, one of the wind-formed landforms, removes smaller materials that the winds can carry in arid and semi-arid regions, causing large materials to remain.