Bannau Brycheiniog (the Brecon Beacons) is a mountain range in South Wales. In a narrow sense, the name refers to the range of Old Red Sandstone peaks popular with walkers which lie to the south of Brecon. Sometimes referred to as "the central Beacons" they include South Wales' highest mountain, Pen y Fan. The range forms the central section of the Brecon Beacons National Park (Parc Cenedlaethol Bannau Brycheiniog), a designation which also encompasses ranges both to the east and the west of "the central Beacons". This much wider area is also commonly referred to as "the Brecon Beacons".
Started at the parking for the Llwyn-onn Reservoir. Headed north along the Taff Trail. At grid SN 992 177 I headed North East along Cefn Crew towards Corn Du. Along Pen Y fan, Cribyn and Fan Y Big. Then headed along Bwlch y Ddwyallt then south west through Craig Fan Las to the dam. Up to spot height 642 then south east through Bwlch Gwyn all the way to Twyn Croes (SO 045 133). Then headed SW through Garn Ddu back to the car park at the reservoir.
