The complex dune forms in this VIS image are located on the floor of Russell Crater. The large ridge dune is unique to Russell Crater. Russell Crater is located in Noachis Terra and is 135km (83miles) in diameter. Orbit Number: 82807 Latitude: -54.2373 Longitude: 13.1536 Instrument: VIS Captured: 2020-08-14 15:11 https://photojournal.jpl.nasa.gov/catalog/PIA24159