Fly over the 'Grand Canyon' of Mars in high-resolution orbiter imagery

See the 2,500 mile-long (4000 km) Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. [Full Story](https://www.space.com/mars-map-archive-usgs-mro-video) Global topography: NASA/GSFC CTX global mosaic: NASA/MSSS/Caltech/ CTX topography: NASA/MSSS/USGS HiRISE: NASA/U.Arizona/USGS/Amazon