Coloured satellite image of landslides on ground fissures in the Martian surface, known as the Cerberus Fossae. The light blue boulders on the slope appear to have fallen from a layer of bedrock at upper right. The Cerberus Fossae were formed when pressure from underground magma pulled the crust apart along fault lines. The process released large amounts of pressurised underground water and volcanic lava. The dark blue areas are basaltic rock and the lighter-coloured surface is sand. Imaged by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.