Clegyr Boia

Clegyr Boia, or Clegyr Fwya, is a prehistoric site on the St David's peninsula, Pembrokeshire, Wales, 33 to 65 feet above the surrounding area [1]. The hilltop's rocky outcrop contains evidence of Neolithic and Iron Age settlements [1]. The outcrop became the stronghold of a 6th-century CE Irish pirate named Boia, after whom it is now called [1]. An associated midden has been dated to around 5500 years before present, during the early to middle Neolithic [1]. Sherds of Neolithic round-bottomed pottery, polished stone axes and animal bones were also discovered [1]. The hill's steep sides were augmented by a single earthen rampart, to form a defensive structure known as a hillfort [1]. The outcrop's southern part was further enclosed by stone walls, roughly rectangular, and measuring about 280 feet by 100 feet [1].