In a hollow between two hills called Uwch Mynydd and Mynydd y Gwyddel, are the ruins of St. Mary's chapel (Capel Fair); and below the cliff is a cave (Ogo Vair), in which there is a well (Ffynnon Vair). The point of the rock is called Braich y Pwll, and that particular part of it under which the well is situated Maen Melyn, the yellow stone. In the times of Popery this well, which was only accessible at low water, was much frequented by devotees, who superstitiously believed that if they could but carry a mouthful of the water by a circuitous and dangerous path to the summit of the hill, their wish, whatever it might be, would be surely gratified. The chapel was placed here to give seamen an opportunity of invoking the tutelar saint for protection, through the dangerous Sound of Bardsey; and probably the walls of the chapel were in those superstitious times covered with votive tablets.

In the cliffs at the west end of Lleyn is a wishing-well called Ffynnon Fair, or St. Mary's Well; where, to obtain your wish, you have to descend the steps to the well and walk up again to the top with your mouth full of the water. Viewing the position of the well from the sea, I should be disposed to think that the realisation of one's wish at that price could not be regarded as altogether cheap.