Prentre Ifan dolmen burial chamber. The surviving stones formed the doorway and main chamber of the tomb, which would originally have been covered by a large mound of stones about 30m x 17m. The stone chamber was at the southern end of the long mound, which stretched off to the north. To visit Pentre Ifan, take the A487 to the junction for Nevern close to Newport. Turn away from Nevern and follow the sign to Cilgwyn and the Gwaun Valley [Cwm Gwaun]. The site of the dolmen is well signposted and there is some parking available in the lay-by a short walk of a few metres following the hedge.