An international team of researchers has found evidence that suggests the Ice-Free Corridor (IFC) proposed to have existed between ice sheets along a route from Beringia to the Great Plains came to exist approximately 13,800 years ago. In their.
A new study has shown that there was a huge ice wall across Beringia that only became crossable 13,000 years ago, adding more support for the sea route theory.
An icy barrier up to 300 stories high – taller than any building on Earth – may have prevented the first people from entering the New World over the land bridge that once connected Asia with the Americas, a new study has found.
Whether they travelled into North America over land depends on whether Beringia was actually had an ice-free corridor, allowing travel down to the Great Plains.