Color elevation key for topographic maps of Mars made from Mars Global Surveyor MOLA altimetry data.
NASA / Goddard Space Flight Center
2001
<a rel="nofollow" class="external free" href="http://mola.gsfc.nasa.gov/images.html">http://mola.gsfc.nasa.gov/images.html</a> (obtained by cropping the high-resolution global image and enlarging the elevation labels font)