The eroded valleys of Dao and Niger Valles ESA

These images, taken by the High Resolution Stereo Camera (HRSC) on board ESA’s Mars Express spacecraft, show the Dao Valles and Niger Valles, a system of outflow channels on Mars. The images were taken during orbit 528 in June 2004, and show the Dao Valles and Niger Valles areas at a point where the north-eastern Hellas impact crater basin and the Hesperia Planum volcanic region meet.