The collapse deposit covers a surface area of , and is thus not as large as the deposit left by the Mount Shasta collapse or by the Nevado de Colima collapse. It forms the Negros de Aras surface northwest of the volcano and the El Cenizal surface due north where it has a hook-like surface distribution; the name Negros de Aras was given to the deposit before it was known that it had been formed by a landslide. The thickness of the deposit varies, with thin segments in the extreme southeastern and southwestern parts being less than thick and the central parts reaching .