The dune field here in Proctor Crater is about 35 x 65 kilometers in size, and was one of the first sand dune fields ever recognized on Mars based on Mariner 9 images.

ID: ESP_054936_1325
date: 16 April 2018
altitude: 252 km

https://uahirise.org/hipod/ESP_054936_1325
NASA/JPL-Caltech/UArizona
#Mars #science #NASA