(MENAFN - The Conversation) According to Geoffrey of Monmouth, whose History of the Kings of Britain was written in 1136, the mysterious monoliths at Stonehenge were first spirited there by the wizard Merlin, whose army stole them from a mythical Irish stone circle called the Giants' Dance. Centuries before the development of rudimentary geology, Geoffrey's exotic theory â that the stones at Stonehenge were filched from a foreign field â has enveloped the 5,000 year-old site in yet another layer of mystical intrigue. Now, it appears the medieval chronicler might have been on to something. Though the stones were moved by manpower not magic, and taken from Wales not stolen from Ireland, our new research has revealed that Stonehenge may actually have first stood on a windswept hillside near the Pembrokeshire coast, at a site called Waun Mawn, before 3000BC. Our findings have dramatic implications for our understanding of the UK's best-known Stone Age site.