Edziza is made up of a lot of cinder cones and blocky lava flows that still keep their first forms. This is the second biggest area of volcanic activity in the northern Stikine Volcanic Belt as well as in Canada. The complex includes the Mount Edziza Plateau, a big volcanic plateau (65 kilometers long and 20 kilometers wide) made of mostly basaltic lava flows with four big stratovolcanoes built on top of the plateau.