Bodafon Mountain is 587 feet (178 metres) tall. It is the highest mountain on the island of Anglesey, although Holyhead mountain, at 722 feet (220 metres), on Holy Island is the highest in the county of Anglesey.
On a clear day, Mynydd Bodafon provides excellent views over much of Anglesey. Its summit is known in Welsh as Yr Arwydd, or The Signal, and is a comfortable walk for any reasonably fit individual. On the eastern side of the mountain is an Iron Age earthwork. Nestled in a natural amphitheatre towards the summit of Yr Arwydd lies Llyn Bodafon, a lake which was formed by glacial melt. It provides a quiet and restful spot for visitors.