Once on Anglesey follow the A55 towards Holyhead. Leave at Exit 3 signposted Y Fali/ Valley. At this roundabout follow sign for Valley.
At Valley turn Right at the traffic lights - signposted Amlwch A5025.
The road to Penrhyn is first on the left after the small village of Llanfachraeth. Follow signs from here and through the farm down to the Caravan Park.