Coastal dunes are a ridge, or a series of ridges, that form at the rear of a beach and differ from most other constructional coastal landforms in ... large reserves of sand and suitable nearshore ...

Sand deposition, accretion ... Blowouts are erosional dune landforms that are typically trough-, bowl-, or saucer-shaped depressions or hollows formed by wind erosion of a pre-existing sandy ...

The yardang/kalut landforms are widely considered the best-expressed in the world in terms of extent, unbroken continuity and height. The Lut sand-seas are amongst the best developed active dune ...