This image, approximately 1.5 by 3 kilometers, shows a sample of eroded Martian terrain in Arabia Terra.

At one time this was a flat smooth terrain, but over time it has been eroded (most likely by the wind) forming depressed, low-lying areas where we see many small dunes. The dunes resemble waves in the ocean, whereas in other areas we see small flat-top hills forming.

ID: ESP_039113_1915
date: 30 November 2014
altitude: 278 km

https://uahirise.org/hipod/ESP_039113_1915
NASA/JPL-Caltech/UArizona
#Mars #science #NASA