NASA Image Linear Sand Dunes in the Great Sandy Desert

[Bok]

In northwest Australia, the Great Sandy Desert holds great geological interest as a zone of active sand dune movement. While a variety of dune forms appear across the region, this astronaut photograph features numerous linear dunes (about 25 meters high) separated in a roughly regular fashion (0.5 to 1.5 kilometers apart).

More... (https://www.nasa.gov/image-detail/nasa-2008336/)