Mangala and Memnonia Fossae

This VIS image shows several linear depressions called graben. Graben are formed due to extensional tectonic stresses, creating linear faults that allow subsidence of blocks of material between paired faults. At the top of the image several graben of Mangala Fossae intersect an impact crater. The other graben in the rest of the image are part of Memnonia Fossae. Both sets of fossae cross between Terra Sirenum and Daedalia Planum.