This terrain is unusual for the South Polar region of Mars, with a set of curved ridges of unknown origin.

Small pits are present, often concentrated on the ridges, that may have resulted from sublimation of ice.

ID: ESP_056311_0940
date: 1 August 2018
altitude: 245 km

https://uahirise.org/hipod/ESP_056311_0940
NASA/JPL-Caltech/UArizona
#Mars #science #NASA