One of the scientific goals for taking this observation is to create a stereo pair with another HiRISE image. From stereo pairs, which are pictures of the same area but at different angles, HiRISE creates 3D (anaglyph) pictures.

Known since at least 2003, this is a wonderful case of (windblown) aeolian sandstone that (a) preserves its original sand dune bedform shapes and (b) lies unconformably over a previously-eroded surface of layered sedimentary rock.

This caption is based on the original science rationale.

ID: ESP_025389_1690
date: 26 December 2011
altitude: 257 km

https://uahirise.org/hipod/ESP_025389_1690
NASA/JPL-Caltech/University of Arizona
#Mars #science #NASA