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