Period IV (1000 BCE-1000 CE) Kachemak tradition Norton tradition Choris, Norton, Ipiutak (in northern Alaska, the forerunners of the Thule people) Independence II culture 800/600-1 BC Dorset Culture (500 BC-1000 AD) Period V (1000 CE-present) Western Arctic Koniaq Old Bering Sea Okvik Birnirk Punuk Thule—Bering Sea Thule "Western Thule" of North Alaska Canadian Thule Inugsuk Thule of Greenland Thule culture (1000-1800 CE) The wave of Thule migrations Western Arctic Eastern Arctic Presumably for climatic reasons, northern Greenland was not populated for about 500 years afterward. Archaeological evidence has shown that before the disappearance of the Saqqaq culture from southern Greenland, a new culture arrived from the Canadian archipelago. The newer people showed a more developed culture from an archaeological standpoint. That culture is called Independence II culture, and it seems to have developed from the C...