Today's VIS image shows parallel sets of depressions. These are tectonic graben formed when a block of material is down dropped between paired faults. Nilokeras Fossa is located on the margin of Kasei Valles. Orbit Number: 85542 Latitude: 23.3657 Longitude: 300.935 Instrument: VIS Captured: 2021-03-27 20:13 https://photojournal.jpl.nasa.gov/catalog/PIA24854