Anaglyph images can be generated using data acquired by the nadir channel of the DLR-operated High Resolution Stereo Camera system on board ESA’s Mars Express orbiter, the field of view of which is directed perpendicularly to the surface of Mars, and one of the four oblique stereo channels. When used with red-blue or red-green glasses, they provide a three dimensional view of the landscape. North is on the right in the image. The topography, that is the differences in height of the surface features, is clearly visible. The Tantalus Fossae are a gigantic network of grabens surrounding the Alba Patera volcano. They extend over 1000 kilometres in a north-south direction and are between two and ten kilometres wide and up to 350 metres deep. They were most likely formed by local and regional stresses in the Martian crust, which are typical for volcanic regions on Mars.