 The populations sheltered in Iberian Peninsula (descendants of the Cro-Magnon) migrated and recolonized all of Western Europe.In this period one finds the Azilian culture in Southern France and Northern Iberia (to the mouth of the Douro river), as well as the Muge Culture in the Tagus valley.The Neolithic brought changes to the human landscape of Iberia (from the 5th millennium BC onwards), with the development of agriculture and the beginning of the European Megalith Culture.