HiRISE 3D: O Lovely Dunes
This observation is part of an ongoing campaign to to aid in classification and volume estimates of dunes in USGS global dune database. Sand dunes are among the most widespread aeolian features present on Mars.
https://www.uahirise.org/anaglyph/ESP_076909_1165_ESP_076988_1165_RED
NASA/JPL-Caltech/UArizona