Did no one post the Mars Express' Valles Marineris picture?
if not, then it is worth a repost ;-)
http://www.esa.int/export/SPECIALS/Mars_Express/SEMWF0474OD_1.html#subhead2
if not, then it is worth a repost ;-)
http://www.esa.int/export/SPECIALS/Mars_Express/SEMWF0474OD_1.html#subhead2