Exploring Martian Volcano's Flank Chasms.
ESA's Mars Express has captured images of the pitted, fissured flank of Ascraeus Mons, the second-tallest volcano on Mars. The volcano's peak is found to the right of the frame, with lava flows and tubes, chains of craters, channel-like rilles, and large fissures spanning tens of km in length visible across the frame. The High Resolution Stereo Camera (HRSC) responsible for these new images has revealed much about Mars' diverse surface features, including wind-sculpted ridges and grooves, impact craters, tectonic faults, river channels, and ancient lava pools.