Cymyran strait

Cymyran Strait is a strait that runs from Beddmanarch Bay in the north to Cymyran Bay in the south between the islands of Anglesey (Ynys Môn) and Holy Island (Ynys Cybi). The strait was first crossed with a permanent land-link by the Four Mile Bridge and later by the A5 London to Holyhead Road at Stanley Embankment