HiRISE 3D: This is NOT Shai-Hulud
This large, hulking formation is actually an elongated mound in Phlegra Montes. There are indications of ancient glacial flow.
Full image: https://www.uahirise.org/anaglyph/ESP_084682_2160_ESP_084471_2160_RED
NASA/JPL-Caltech/University of Arizona
@HiRISE ancient glacial flow!