A ridge stands prominent in this scene, left behind as the surroundings were eroded, perhaps marking inverted erosion of an ancient fluvial channel. The ridge is made of material more resistant to erosion and, considering the craters on its flanks, was formed long ago.

Erosion continues to this day: boulders that have fallen from the ridge are evident, scattered along the sides. Sand has begun to form small dunes adjacent to the ridge.

ID: ESP_073454_2100
date: 28 March 2022
altitude: 290 km

https://uahirise.org/hipod/ESP_073454_2100
NASA/JPL-Caltech/UArizona
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