The framed areas show various geological features on the southern flank of Ascraeus Mons volcano that are described in the main text. Starting from the higher regions in the north (right) and moving to the areas in the south (left) these are: solidified lava flows; a 6000-square-kilometre area of basin-like structures, pit crater chains and downslope chains of collapse basins; a pit crater chain; a sinuous rille; coalesced pit crater troughs; fissures with a braided channel; and fissures with braided channel and streamlined island.