The “collarlike” shapes we see in this observation may indicate the deflation of old flow units. Since Utopia Planitia is a volcanic region of Mars, perhaps the units could have formed when volcanic material cooled and then contracted. With a stereo pair, we can investigate if the collar is at a constant elevation.

ID: ESP_076258_2050
date: 2 November 2022
altitude: 286 km

https://uahirise.org/hipod/ESP_076258_2050
NASA/JPL-Caltech/University of Arizona
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