Before the corridor closed, prior to the last glacial maximum, they moved freely up and down between the ice-free regions in the north and grasslands south of the ice sheets. After the ice sheets ...

The ice-free corridor between the two massive sheets is not thought to have completely opened until around 13,800 years ago, according to a 2022 study published in the journal PNAS.

In 2021, researchers working in New Mexico published a paper that contributed to what remains one of the most controversial ...

One of the hottest debates in archeology is how and when humans first arrived in North America. Archaeologists have traditionally argued that people walked through an ice-free corridor that ...

When a colder climate expanded the glaciers, closing the Ice-Free Corridor, descendants were stuck on separate ends for about 15,000 years before it reopened, allowing cross-migration to resume.

"The mounting evidence for human arrival prior to the opening of the ice-free corridor makes the coastal route the most likely pathway into North America," Praetorius said.

One of the hottest debates in archeology is how and when humans first arrived in North America. Archaeologists have traditionally argued that people walked through an ice-free corridor that briefly ...