Some entered Europe by way of the islands of the Aegean and up the Danube valley, but the majority of the earlier and purer strains migrated to northwestern Europe by the northern route across the grazing lands of the Volga and the Don. [1]
By 5000 B. C. Central Europe was for some time controlled by the blue man and the round-headed Andonites, mainly situated in the Danube valley; they were never entirely displaced by the Andites. [2]