The objective of this observation is to examine several small channels that seem to be entering a low area. This may be evidence that the ground was quite water-rich. Reull Vallis starts in Promethei Terra and empties into Hellas Planitia and is 1,051 kilometers (653 miles) long. Reull is the Gaelic word for “planet.”

ID: ESP_076245_1425
date: 1 November 2022
altitude: 250 km

https://uahirise.org/hipod/ESP_076245_1425
NASA/JPL-Caltech/University of Arizona
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