The Metis Mons quadrangle (V???6) in the northern hemisphere of Venus (lat 50?? to 75?? N., long 240?? to 300?? E.) includes a variety of coronae, large volcanoes, ridge and fracture (structure) belts, tesserae, impact craters, and other volcanic and structural features distributed within a plains setting, affording study of their detailed age relations and evolutionary development.