This image captured by NASA 2001 Mars Odyssey spacecraft shows a small portion of Reull Vallis. Reull Vallis is one of the major channels entering eastern Hellas Planitia. Orbit Number: 66499 Latitude: -39.1457 Longitude: 111.246 Instrument: VIS Captured: 2016-12-10 10:06 http://photojournal.jpl.nasa.gov/catalog/PIA21298