Mynydd Bodafon is the highest point on the island of Anglesey (although not in the county of Anglesey — see Holyhead Mountain). Its summit is also known as Yr Arwydd ("the signal"). It lies about 2½ miles west of the coastal town of Moelfre and ⅔ of a mile 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 possibly a corruption of the personal name A(e)ddan (afon is Welsh for 'river' but topography rules that out).
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Isle of Anglesey