of the nearby farmstead, Llech Goronwy (Goronwy’s Slate). In addition, there is another hill in the area called Bryn Cyfergyd, which may be the Bryn Cygergyr (Hill of Battle) of the Mabinogi and thus the hill from which Gronw threw his spear while attempting to kill Lleu. Role in popular culture The story of Lleu Llaw Gyffes, Blodeuedd and Gronw Pebyr was the inspiration of Alan Garner's 1967 novel The Owl Service. Garner adapted his novel for Granada Television in 1969. The Owl Service TV series was filmed in many of the locations mentioned in the novel. For the filming a replica of Llech Ronw was carved by local stone mason Edward Rowlands from a brief by Granada Television's chief designer Peter Caldwell: "An upright piece of slab stone or slate (like a gatepost) with a 4" dia rough hole cut through it 1'.0" from the top and a roughly etched grooved pattern of circles 2'.0" from the top. The stone should be 5'.00" above the ground and 2".0 below. The stone should be very rough and weather-worn and will represent an ancient monument". After the production was finished the stone was left in situ by the River Dovey. Rowlands later added his name to the carving so that his work would not be mistaken for an ancient monument. References Welsh mythology Mabinogion Megalithic monuments in Wales Mawddwy