The Medusae Fossae Formation is a huge discontinuous geological unit that might be of volcanic origin. Some areas are smooth, but others, like in this picture, show impressive layers. How the thickness of these layers taper may help us understand their origin.

ID: ESP_063279_1770
date: 26 January 2020
altitude: 270 km

https://uahirise.org/hipod/ESP_063279_1770
NASA/JPL-Caltech/University of Arizona
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