If the Alps were a significant barrier in Ötzi’s time, they may have slowed the penetration of steppe ancestry into Alpine valleys even as it transformed the genetics of lowland Europe.

Future ancient DNA research on Alpine populations from the period after the steppe migration began would help clarify whether and how steppe ancestry eventually entered the Alpine genetic pool.

Copper Age Europe: The Broader Context

Ötzi’s genome, and what it tells us about his ancestry and appearance, is most meaningful in the context of the broader story of Copper Age Europe — the world he was part of, the world that formed him, the world that was already being transformed by forces that would soon change everything.

The fourth millennium BCE was a period of enormous dynamism in European prehistory.