Crater Wall on Solis Planum . ... Mars Express , DLR , ESA Explanation: This dramatic perspective view looks south-east along the wall of a large eroded impact crater on S olis Planum, bordering the mountainous Thaumasia region of Mars. Stretching for about 50 kilometers into the scene, the crater wall is around 800 meters high. ... The image was constructed using color image data from the High Resolution Stereo Camera onboard ESA's Mars Express spacecraft . ... NASA Official: Jay Norris. ...