The ice-free migration corridor emerged east of the Rocky Mountains in present-day Canada.
Notes on verification
Multiple independent, high-quality sources including a peer-reviewed PNAS study and academic institution corroborate the location and formation of the corridor east of the Rockies.
Sources
- New Study Refutes Theory of How Humans Populated North America | HISTORY (history.com)
- https://www.pnas.org/doi/full/10.1073/pnas.2118558119 (pnas.org)
- https://www.imperial.ac.uk/news/234899/ice-free-corridor-opened-late-population-route/ (imperial.ac.uk)
- https://www.sciencedirect.com/topics/earth-and-planetary-sciences/ice-free-corridor (sciencedirect.com)