Tractus Catena was imaged during orbit 9538 of Mars Express by the HRSC camera. Centred at around 23°N and 103°W, this 3D image has a ground resolution of about 22 m per pixel. It combines data from HRSC’s nadir channel and one stereo channel to produce this 3D image. Stereoscopic glasses, using red-green or red-blue filters are required to see the 3D effect.