MGS MOC Release No. MOC2-440, 2 August 2003

Warrego Valles is a suite of branching valleys located in the martian southern hemisphere near 43°S, 92°W. This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows some of the valleys of this system. They are old and have been partially filled with material that today forms an eroded, rugged texture. Prior to the MGS mission, it had been hoped that MOC would show evidence as to how valleys such as those in the Warrego system formed, but many of the valleys turned out to have been modified by later processes that obscure the original geologic features related to their origin. This image is illuminated from the upper left.