Pen-y-Gaer Hill Fort
A Bronze Age hill fort can be found on the summit of Pen-y-Gaer, close to the village of Llanbedr-y-Cennin to the south of Conwy. The fort had quite complex defences, including three ramparts in places, and some short standing stones (a sort of chevaux de frise) to act as obstacles to both cavalry and infantry. This could indicate that the site has had a long occupation, and that the defences were added and improved several times.
The entrance is facing west, and there are remains of some Iron Age structures at the site along with two Bronze Age cairns. It is thought that the earthworks on the south-eastern slopes could have been made during medieval times.