They were not Homo Sapiens. H.S. migrated to Europe from Africa about 200,000 years ago and successive waves came from the Middle East as recently as 15,000 years ago. The salient point is that white people aren't really that white.
By reanalysing human skull fragments discovered four decades ago in Greece, an international team of researchers now believe that an early modern human migration out of Africa may have reached Europe by at least 210,000 years ago.
This pushes back the known date of Homo sapiens in the region by more than 150,000 years.
https://www.nhm.ac.uk/discover/news/2019/july/modern-humans-may-have-been-in-europe-150-000-years-earlier-than.html