Sirenum Fossae

The linear depression in this VIS image is part of Sirenum Fossae. Depressions of this type are called graben, which form by the down drop of material between two parallel faults. The faults are caused by extensional tectonic stresses in the region. The fossae are 2735km long (1700 miles). Orbit Number: 83781 Latitude: -39.5762 Longitude: 174.649 Instrument: VIS Captured: 2020-11-02 19:27 https://photojournal.jpl.nasa.gov/catalog/PIA24288