New Dates for the Emergence of the Megalithic Phenomenon on the Iberian Plateau: The Funerary Practices of Valdelasilla, Toledo (Spain)

Abstract This study presents an analysis of funerary practices at the site of Valdelasilla (Illescas, Toledo, Spain). The methodology integrates the morphological study of burial structures, anthropological analyses, a consideration of grave goods and the radiocarbon dating of human bone. The chronological data indicate funerary activity at the site from the Late Neolithic to the Chalcolithic period. Bayesian modelling confirms the establishment of a planned cemetery by the end of the fifth millennium cal. bc , featuring small burial chambers organized around a larger tomb enclosed by a ditch. The burial chambers, which were constructed from wood, clay and small stones, created distinct spaces for the deceased. This embryonic form of monumentalization, the funerary practices observed and the early chronology link Valdelasilla to other peninsular cemeteries associated with the emergence of megalithism, now identified for the first time on the plateau. The location of the necropolis offers new insights into the role of inland regions in the emergence of Iberian and European megalithism.