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 Cymoedd the farm has been fully operational since 7 May 2017. The farm was officially opened in September 2017. Pen y Cymoedd Pen y Cymoedd ("Head of the Valleys") is a wind farm located between Neath and Aberdare in south Wales. It opened in 2017. Natural Resources Wales signed a lease agreement with Vattenfall of Sweden and its British-based subsidiary Vattenfall United Kingdom (formerly Nuon Renewables), to develop what will be the United Kingdom's highest altitude wind farm, on a site owned by Natural Resources Wales, previously the Forestry Commission Wales. The project has seen the installation of 76 turbines with