See the 2,500 mile-long (4000 km) Valles Marineris in imagery captured the Mars Reconnaissance Orbiter.<br /><br />Global topography: NASA/GSFC<br />CTX global mosaic: NASA/MSSS/Caltech/<br />CTX topography: NASA/MSSS/USGS<br />HiRISE: NASA/U.Arizona/USGS/Amazon
