This image is part of a longterm seasonal monitoring site with lots of long bright and dark fans. These are formed as a result of sublimation, when subsurface ice is transformed by sunlight into a gaseous state and exposes the underneath darker material. This is subsequently blown about by the wind and the fans will fade over time.

ID: ESP_073543_0925
date: 4 April 2022
altitude: 247 km

https://uahirise.org/hipod/ESP_073543_0925
NASA/JPL-Caltech/UArizona
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