The dunes seen in this VIS image are 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. Rabe Crater is located in Noachis Terra and is 108km in diameter (67 miles). Orbit Number: 82906 Latitude: -43.447 Longitude: 35.0145 Instrument: VIS Captured: 2020-08-22 18:52 https://photojournal.jpl.nasa.gov/catalog/PIA24184