An ancient camp in Alaska holds amazing clues about how the first people traveled all the way to North America
From Earth.com:
The Bering Land Bridge is usually described as a temporary highway that Ice Age hunters walked across to get to the Americas.
On a bluff above the Tanana River in interior Alaska, though, some of those people stopped and stayed a while. They put up a shelter, dug a cooking oven, and sewed with bone needles. Furthermore, they came back to the same spot for up to two centuries.

