Valles Marineris - Overhead
Picture taken with the High Resolution Stereo Camera (HRSC) on board ESA's Mars Express orbiter on 14 January 2004 under the responsibility of the Principal Investigator Prof. Gerhard Neukum.
It was processed by the Institute for Planetary Research of the German Aerospace Centre (DLR), also involved in the development of the camera, and by the Institute of Geosciences of the Freie Universität Berlin.
It shows a portion of a 1700 km long and 65 km wide swath which was taken in south-north direction across the vast canyon system on Mars - Valles Marineris).
It is the first image of this size that shows the surface of Mars in high resolution (12 metres per pixel).