Reull Vallis

This image captured by NASA 2001 Mars Odyssey spacecraft shows a section of Reull Vallis, a major channel that empties into Hellas Planitia.

Orbit Number: 58040 Latitude: -39.0604 Longitude: 111.349 Instrument: VIS Captured: 2015-01-13 17:56

http://images.nasa.gov/#/details-PIA19226.html