Every year we see new slumps on dune slip faces at high northern latitudes, and old slumps are erased by windblown sand. This image was acquired as part of a joint study with MRO’s Mars Climate Sounder (MCS), to determine if the rate of slumping seen by HiRISE corresponds to winter snowfall tracked by MCS.

Be sure to check out the stereo anaglyph using red-green glasses. The slumps look strange in the anaglyph, because they change every year and the other image for the stereo pair was acquired one Mars year ago.

ID: ESP_062901_2560
date: 27 December 2019
altitude: 320 km

https://uahirise.org/hipod/ESP_062901_2560
NASA/JPL-Caltech/University of Arizona
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