This picture was taken by the High Resolution Stereo Camera (HRSC) onboard ESA’s Mars Express orbiter, in colour and 3D, in orbit 18 on 14 January 2004 from a height of 275 km. The location is
south of Valles Marineris at 15° South and 323° East.
The resolution is 12 m per pixel, the area is 50 km across and shows a tectonically controlled karst-like structure in a vertical view. North is at top.