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.

.. on the side of the hill called Mynydd Moelvre, or Mynydd yr Ystum, are the ruins of an old chapel called Capel Odo; and near it tumulus distinguished by the appellation of Bedd Odo or Odo's grave, who according to tradition was a great giant.