A Context Camera image showed light-toned blocks that may be consistent with the megabreccia basement, which is possibly exposed here as well in Valles Marineris. HiRISE had no previous coverage here, something that makes for a good HiWish target rationale. Nirgal Vallis is 610 km long and is named after Nergal, the Babylonian god of war and counterpart to the Roman god of war Mars.

ID: ESP_073956_1500
date: 6 May 2022
altitude: 256 km

https://uahirise.org/hipod/ESP_073956_1500
NASA/JPL-Caltech/University of Arizona
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