Ancient Traces | Space Wallpaper

This stunning space wallpaper shows the ancient cratered southern highlands of Mars. Faint traces of a wet past are seen in the form of channels (lower center), fluidized debris around craters (bottom right) and blocks of eroded sediments (top left).



via LiveScience.com http://www.livescience.com/41564-tagus-valles-space-wallpaper.html