Topographic map of Mars at 1:100 000

A smaller scale topographic map of the Iani Chaos region on Mars. The scale is just 1:100 000 and the contour lines are finer, just 100 metres difference, to help bring out more subtle gradations in the height of Martian surface features. The data were obtained by the High Resolution Stereo camera on board ESA’s Mars Express on 5, 8 and 11 October 2004 (during orbits 0912, 0923 and 0934 of Mars Express).