Caer Gwrtheyrn

Craig Gwrtheyrn, or Caer Gwrtheyrn, is an Iron Age hillfort on the south side of the River Teifi, about 1.2 miles (1.9 km) west of the village of Llanfihangel-ar-Arth, in Carmarthenshire, Wales [1]. The fort is on an imposing hill overlooking the River Teifi [1]. The defences measure about 160 metres north to south, and 125 metres east to west, following the contours of the hill, enclosing an area of about 1.5 hectares [1]. The drystone rampart, of which traces remain, was originally 2–3 metres thick [1]. There is a ditch around the rampart (except on the very steep north-east side); stones from the rampart have fallen into this [1]. There is an entrance on the south-west, where two further banks create a barbican and where there is also a small area of chevaux de frise: sharp stones set on end, of which about 30 remain [1]. Craig Gwrtheyrn, or Caer Gwrtheyrn, is associated with the 5th-century British warlord Vortigern [1].