HiRISE: Frosted dunes

ESP_045311_1205Sand dunes cover much of this terrain, which has large boulders lying on flat areas between the dunes.

It is now late winter here in the Southern hemisphere, and these dunes are just getting enough sunlight to start defrosting their seasonal cover of carbon dioxide. Spots form where pressurized carbon dioxide gas escapes to the surface. [More at link]

This entry was posted in Reports and tagged , , , , , , , , . Bookmark the permalink.

Comments are closed.