Time period from c 800 AD to European colonization when Native Americans of the Mississippian tradition built large flat-topped earthen structures (platform mounds) designed to function as artificial mountains elevating their temples above the landscape. This period followed the Burial Mound period and is the most recent period of a chronological construction relating to the whole of eastern North American prehistory (formulated by J.A. Ford and Godon Willey). The periods are: Paleo-Indian, Archaic, Burial Mound, and Temple Mound. The Temple Mound period is divided into two sub-periods: Temple Mound I (800-1200 AD), the establishment and rise of the Mississippian Tradition; and Temple Mound II (1200-1700 AD), the peak and then demise of the Mississippian.