Inuit: A People Preserved By Ice Thousands of years ago, during the last ice age, mile-thick glaciers covered a vast portion of North America, and the Asian continent was joined to North America by a land bridge. The Arctic areas of Alaska, Beringia, and Siberia were free of ice. Vast herds of caribou, muskoxen, and bison migrated to these plains. Following them were the nomadic Asian ancestors of today's Inuit and Indians. The doorway to Asia closed about three or four thousand years later as the glaciers receded and melted. These people: the Inuit (meaning the people), adapted to their harsh tundra environment and developed a culture that remained untainted for a lon