The two depression crossing this image are called Pavonis Fossae and are located on the northern lower flank of Pavonis Mons. These linear features are most likely created by a combination of both tectonic and volcanic forces. The top feature has several narrow 'walls' within the depression, indicating a collapse of the roof of an empty lava tube. Pavonis Mons is the central volcano of the three large Tharsis volcanoes. All three volcanoes form a line located along a tectonic bulge caused by extensional forces in the region. Pavonis Mons is the smallest of the three with a summit of only 14km (8.7 miles). Orbit Number: 90136 Latitude: 3.50046 Longitude: 249.786 Instrument: VIS Captured: 2022-04-10 02:31 https://photojournal.jpl.nasa.gov/catalog/PIA25472