HiRISE: High terrain between Sinai and Solis Plana

The terrain in this observation looks like an ancient uplifted crustal block. The area is riddled with faults (big cracks that allow rocks to slide) and ridges that look like uncovered magma dikes. A Mars Orbital Camera picture shows the region to be moderately dusty, but rocks do poke out along the ridges… [More at link]