Winds in this region have modified the surface, carving valleys into a poorly cemented material. The winds in this region blew to the northeast (north is to the top of the image, and sunlight is coming from the right). These linear valleys are called yardangs.
Orbit Number: 72445 Latitude: -9.22287 Longitude: 187.05 Instrument: VIS Captured: 2018-04-14 07:28
https://photojournal.jpl.nasa.gov/catalog/PIA22604