Among the last Native groups to come into North America, the Inuit crossed the Bering land bridge sometime between 6000 B.C. and 2000 B.C. , according to various sources. Anthropologists have discerned several different cultural epochs that began around the Bering Sea. The Denbigh, also known as the Small Tool culture, began some 5000 years ago, and over the course of the next millennia it spread westward though Arctic Alaska and Canada. Oriented to the sea and to living with snow, the Denbigh most likely originated the snow house. Characterized by the use of flint