Some small dunes in this area are climbing up a larger, dark dune. These dunes are leaving behind smaller features called transverse aeolian ridges (TAR) in their wake. By knowing the rate of migration of the smaller dunes, we can figure the rate of evolution of the TAR pattern. This unique area also shows dune gullies and should be monitored with high priority.

ID: ESP_063890_1340
date: 13 March 2020
altitude: 252 km

https://uahirise.org/hipod/ESP_063890_1340
NASA/JPL-Caltech/UArizona
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