This file is a 640x480 pixel color GIF image showing a large part
of Valles Marineris, a large valley on Mars.  The detailed
structure of the valley looks much like erosion patterns on
Earth.  An enlargement of part of this image is shown in
00N107-2.  Other parts of Valles Marineris are shown in other
images.  The color used is an approximation, rather than "true"
color.