Cefn-y-Bryn

Cefn-y-Bryn is a place in Gower, Wales, where there is a burial chamber known as Arthur's Stone.

Tradition has it that Arthur, on his way to his final battle at Camlann, felt a pebble in his boot and, after taking it out, flung it into the distance. It landed some seven miles away at Cefn-y-Bryn.