Just a little bit of extra useless information about tunnels! L0L
The Rhos Fynach Pub in Rhos On Sea (meaning 'Monk's Marsh') is the oldest building in the area, but was originally a 12th century monastery with secret tunnels linking it to the nearby 6th century, Chapel of St Trillo. Rhos Fynach was the home to the monks who fished the weir off Rhos Point to provide the catch for the larger monastery in Conwy at the time.