This image shows gullies that are large even by Mars standards, and much larger than the terrestrial landforms we call gullies. The length of some of these is over 6 kilometers (3.6 miles).

They are located on large mountains north of the Argyre impact basin. An enhanced color view (reduced scale) shows only subtle color differences.

ID: ESP_034829_1325
date: 31 December 2013
altitude: 252 km

https://uahirise.org/hipod/ESP_034829_1325
NASA/JPL-Caltech/University of Arizona
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