Beneath the windswept ridges and limestone caves of the Iberian Peninsula lies a deep palimpsest of human presence. Archaeological sites cited in the dataset — El Portalón Cave and the Sierra de Atapuerca, La Braña‑Arintero, Cueva de los Lagos, Cabezo Redondo and others — preserve a sequence from Upper Paleolithic foragers to Neolithic farmers and later Bronze Age societies. Radiocarbon and stratigraphic evidence place occupations in the record between roughly 40,000 BCE and the close of the pre‑Roman centuries around 100 BCE.
The material record shows long‑term continuity alongside punctuated change. Early hunter‑gatherer traditions persisted in northern and interior valleys while the arrival of farming in the Neolithic introduced new pottery, domesticated plants and animals, and sedentary village life. Archaeological data indicates a major social reorganization during the late 3rd and early 2nd millennium BCE (regional Bronze Age), when fortified settlements, specialized metallurgy and large burial monuments become more visible in southeast and central Iberia.
Limited evidence suggests these cultural transformations were accompanied by movements of people as well as ideas. The genetic data from 136 ancient individuals supports a model in which indigenous Paleolithic/Neolithic ancestries persisted even as new ancestries arrived in the Bronze Age, producing the mosaic populations archaeologists encounter in the field.
