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 Ty-Nant begins in Rhyd-uchaf and takes approximately 45 mins for a round trip. Alternatively a bridle path leads here from Bala. The summit is unmarked on open farmland. Pen Ty-Nant Pen Ty-Nant () is a hill within the Snowdonia National Park in Gwynedd, North Wales. Pen Ty-Nant is a member of the Arenig range, just from the small hamlet of Rhyd-uchaf and from Bala. Its parent peak Arenig Fawr is approximately to the west. It is a continuation of a small ridge that begins just to the northwest of Bala and ends at Moel y Garnedd on moorland known as the