The large sand sheet with surface dune forms seen in this VIS image is located on the complex floor of Rabe Crater. The sand is likely derived by erosion into the deposit that fills most of the crater floor, creating a pit which hosts the dunes. This crater morphology is unique to Rabe Crater. Rabe Crater is located in Noachis Terra and is 108km in diameter (67 miles). Orbit Number: 83505 Latitude: -43.6272 Longitude: 34.5903 Instrument: VIS Captured: 2020-10-11 02:34 https://photojournal.jpl.nasa.gov/catalog/PIA24260