Black Point & Puffin Island
Puffin Island is the ninth largest island off the coast of Wales. It is Carboniferous limestone, at its highest point it is 58 metres (190 ft) above sea level having steep cliffs on all sides. It has an area of 0.28 square kilometres (69 acres).
A monastery existed on the island in the late 12th century and was mentioned by Giraldus Cambrensis who visited the area in 1188. He claimed that whenever there was strife within the community of monks a plague of mice would devour all their food. King Cadwallon ap Cadfan of Gwynedd is said to have sheltered here in around 630 when fleeing an invasion from Northumbria. Llywelyn the Great issued two charters in 1221 and 1237 confirming the canons regular, in possession of the island and the church and manor of Penmon on the mainland of Anglesey. The ruins of several ecclesiastical buildings are visible on the island, including the remains of a 12th century church.