Llyn Cwm Llwch both Pen y Fan and Corn Du and indeed from the spur of Pen Milan to its west. Llyn Cwm Llwch Llyn Cwm Llwch () is a small lake or pool in the Brecon Beacons National Park in Powys, Wales. It is between 1 and 2 acres: much smaller than the two glacial lakes in the west of the Black Mountain (range): Llyn y Fan Fawr and Llyn y Fan Fach. It is of glacial origin, occupying a rock hollow beneath the peaks of Pen y Fan and Corn Du in the central Brecon Beacons. It is drained by the
Pen-y-clawdd Pen-y-clawdd Pen-y-clawdd is a village in Monmouthshire, south east Wales, situated between Raglan and Monmouth. The village is the site of a medieval fortification and there is a historic church with an ancient cross in the churchyard which is a scheduled monument. Pen-y-clawdd is located about two miles east of Raglan and five miles southwest of Monmouth, on the unclassified road leading from Usk to Monmouth, and to the east of the A449 trunk road. The site of a possible medieval ringwork castle has been identified near the village at . Pen-y-clawdd was granted manorial status in 1349 when it