This perspective image, taken by the High Resolution Stereo Camera (HRSC) on board ESA’s Mars Express spacecraft, shows the central part of the 4000-kilometre long Valles Marineris canyon on Mars. The HRSC obtained this image during during orbits 334 and 360, on 24 April and 2 May 2004 respectively, with a resolution of approximately 21 metres per pixel for the earlier orbit and 30 metres per pixel for the latter. Image Credit: ESA/DLR/FU Berlin (G. Neukum)
