Llyn y Fan Fawr outflow is to the River Tawe. Much of the land around the lake is peaty and thus wet underfoot. Llyn y Fan Fawr Llyn y Fan Fawr (Welsh: 'lake of the big peak') is a natural lake in the county of Powys, Wales. It lies at the foot of Fan Brycheiniog, the highest peak of the Black Mountain (Welsh"Y Mynydd Du") range within the Brecon Beacons National Park. Created as a result of glacial action, it is one of the largest glacial lakes in southern Wales. The lake is roughly rectangular in shape with its long axis oriented roughly north-south.
Ordesa y Monte Perdido National Park Ordesa y Monte Perdido National Park Ordesa y Monte Perdido National Park (Parque nacional de Ordesa y Monte Perdido) is an IUCN Category II National Park situated in the Pyrenees of Huesca province, Aragon, Spain. There has been a National Park in the Ordesa Valley since 1918. Its protected area was enlarged in 1982 to cover the whole region amounting to 156.08 km². It has been included since 1997 by UNESCO in the Biosphere Reserve of Ordesa-Viñamala. In the same year it was included in the cross-border Pyrénées - Mont Perdu World Heritage Site. The park's territory includes the municipalities