Mynydd Bodafon is a small collection of peaks including Yr Arwydd which is the highest point on the island of Anglesey. It lies about 2+1⁄2 miles (4.0 km) west of the coastal town of Moelfre and 2⁄3 mi (1.1 km) south-west of the hamlet of Brynrefail. The meaning of Bodafon is obscure. Bod is a common placename element meaning 'dwelling' and afon here is probably a corruption of the personal name A(e)ddan.