The prehistoric site of Son Oleza is a prehistoric "Beaker culture" dolmen and associated settlement site on the Spanish island of Mallorca. It is near to the village of Valldemossa on the island's north-west facing coast. The site is named after the nearby place of Son Oleza. The large site, a nearly complete village, has been investigated by Professor . Significant features include houses, a dolmen and a water supply system.It is believed the site was occupied by several families between circa 2500BC to circa 1300BC.