This image captured by NASA 2001 Mars Odyssey spacecraft shows one of the mega sized gullies located on the plains just south of Ius Chasma.
Orbit Number: 65907 Latitude: -8.73127 Longitude: 275.005 Instrument: VIS Captured: 2016-10-22 15:44
http://photojournal.jpl.nasa.gov/catalog/PIA21188