This fascinating topography within Dokka Crater in the northern polar region of Mars might be caused by the process of sublimation of subsurface water ice, where a solid converts directly into a gaseous state.

ID: ESP_062353_2570
date: 15 November 2019
altitude: 318 km

https://uahirise.org/hipod/ESP_062353_2570
NASA/JPL-Caltech/UArizona
#Mars #science #NASA