The right angle intersections in this VIS image are some of the graben that form Sacra Fossae. The fossae are located on the margin of Lunae Planum near the beginning of Kasei Valles. Graben are depressions caused by parallel faults where a block of material drops down along the fault face. Orbit Number: 72616 Latitude: 18.1066 Longitude: 287.915 Instrument: VIS Captured: 2018-04-28 09:42 https://photojournal.jpl.nasa.gov/catalog/PIA22617