Catastrophic flooding triggered by ice melting from the heat of volcanic activity is thought to be responsible for the chaotic scenery depicted in this region of the Mangala Valles channel network.
The images were taken by the high-resolution stereo camera on ESA’s Mars Express on 12 July just to the south of the mouth of Minio Vallis. The region is part of the Mangala Valles outflow channel system, and is situated in the southwestern portion of the Tharsis bulge, home to several volcanoes, including the Solar System’s largest: Olympus Mons. [More at link]