Today's VIS image shows part of the summit caldera of Olympus Mons. Scarps and extensional features (graben) record multiple stages of caldera collapse at the summit of Olympus Mons. Olympus Mons is the largest volcano in the solar system, reaching heights over 40 km (25 miles) tall from base to summit, with the base covering an area as large as the state of Arizona. For comparison, Mauna Loa is 9 km (5.5 miles) tall measured from its base on the sea floor. Orbit Number: 87666 Latitude: 18.7403 Longitude: 226.733 Instrument: VIS Captured: 2021-09-18 17:27 https://photojournal.jpl.nasa.gov/catalog/PIA25230