Located west of the Elysium Volcanic complex, Hebrus Valles is a complex channel system that flowed to the north. In this VIS image the there are fluid created channels and tectonic formed depressions. In other portions of the valles, there are pits and collapse features which appear to have formed by material falling into subsurface voids. This is a common feature in regions of volcanic activity where lava tubes run below the surface. Both water and lava contributed to the formation of Hebrus Valles. Orbit Number: 78248 Latitude: 17.8704 Longitude: 128.118 Instrument: VIS Captured: 2019-08-05 06:11 https://photojournal.jpl.nasa.gov/catalog/PIA23458