Holy Island, Anglesey Rhoscolyn, and Four Mile Bridge. Around of the Anglesey Coastal Path is on Holy Island. Peripheral islands and stacks include North Stack, and South Stack, with its famous lighthouse. Before – and even after – the construction of lighthouses, the cliffs and jagged rocks of the island were a great danger to sailors. Holy Island, Anglesey Holy Island (, 'the island of (Saint) Cybi') is an island () on the western side of the larger Isle of Anglesey, Wales, from which it is separated by a narrow, winding channel. It is called "Holy" because of the high concentration of standing
St Gwenfaen's Well community of Rhoscolyn in the south west of Holy Island, Anglesey. The well is just under west by south west of the village of Rhoscolyn which is the location of St Gwenfaen's Church, part of the ministry area of Holy Island (Church in Wales). As with much of Holy Island, the well lies within the area of the Glannau Ynys Gybi (Welsh: "Holy Island Coast") Site of Special Scientific Interest and the Anglesey Area of Outstanding Natural Beauty. The remains of the drystone well house are east-west by (originally) north-south. Three steps descend into the building from the east into