The ancestors of Native Americans came to the New World by walking over a land bridge across the Bering Strait. But there’s a rather glaring 10,000 year gap in the story — one that could be explained by a migratory pause that lasted for millennia.
I’ve always thought of the idea of a land bridge as a narrow strip of land. Apparently it might have been as wide as Alaska and hosted an environment for a culture to have thrived in for thousands of years. It’ll be interesting to see if they can find any archaeological evidence for this theory.