The mouth of the Tiu Valles channel system, one of the major outflows entering the low-lying Chryse Planitia plain from the southern highlands. This scene is roughly 50 kilometers wide. According to ESA, the exact processes that formed these odd structures are unknown. One possibility is that during floods, water or water-rich surface layers came in contact with lava from the surrounding areas, which then might have led to the formation of these mysterious ridges.