Europeans followed game along the ice to North America during the last ice age, but failed to remain or died out.

https://insider.si.edu/2012/03/ice-age-mariners-from-europe-were-the-first-people-to-reach-north-america/

Also, one theory is that humans migrated from the Middle East through Aisa Minor, north into Asia, and then circled back into Europe.

https://popular-archaeology.com/article/a-research-framework-for-tracing-human-migration-events-after-out-of-africa-origins/