Holyhead Mountain is the highest point of Holy Island and takes up almost half of the land. Two if its sides slope steeply towards the sea with dramatic effect.
Most people are attracted to the coast by the birdlife, but the mountain has historical significance - there is a Roman tower, Caer y Twr (Tower Fortress), on the east slope and the entire summit comprises of a vast Iron Age fort, the Caer y Twr.
The mountain is also a popular destination for walkers and rock climbers and there are a number of different routes to the summit depending on your mood and skill from easy walks to more gruelling climbs.