This VIS image contains a section of one of the many channel forms found on the northwestern side of the Elysium Mons volcanic complex. The channel features are thought to have both a tectonic and volcanic origin. The linear depression resembles a graben (formed by tectonic forces) and the smaller sinuous channels to the top of the image more closely resemble features caused by fluid flow - either lava or water created by melting subsurface ice by volcanic heating. Orbit Number: 72646 Latitude: 29.3486 Longitude: 140.473 Instrument: VIS Captured: 2018-04-30 21:04 https://photojournal.jpl.nasa.gov/catalog/PIA22619