Llyn y Fan Fawr (Welsh for 'great lake (near) the 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 (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.

Best trails near Llyn y Fan Fawr

About