https://uahirise.org Updates from the HiRISE camera onboard the Mars Reconnaissance Orbiter (MRO/NASA). We are based at the University of Arizona in Tucson, Ariz. en-us editor@uahirise.org (Ari) Sun, 21 Jun 2026 4:47:35 MST https://uahirise.org/ESP_053345_2640
Based on their shapes and examples of fractured crests in some areas, mega-ripples are thought to be largely inactive relics of past climates. (NASA/JPL-Caltech/University of Arizona)]]>