The broad, thin lobes of material apparently flowed at high velocity from the bases of the collapsing masses. The mechanism by which the surface striations formed is not well understood, although similar features have been observed on terrestrial landslides. Groups of hills, similar to chaotic terrain, and sand dunes contribute to a varied canyon floor landscape. Layering in the upland rocks is evident near the top of the south canyon wall within the landslide alcoves. The image is about 160 km across.
North is to the bottom of the image.