上层水库-Pen y Fan

The Beacons Way is a waymarked long distance footpath in the Brecon Beacons National Park, Wales. It is a linear route which runs for 99 miles (159 km) east to west through the National Park, and passes many of the most important landmarks and mountain peaks in the mountain range. It also includes a few of the towns in the park as well as popular attractions such as Carreg Cennen Castle near Llandeilo at the western end of the path.

The Brecon Beacons (Welsh: Bannau Brycheiniog, IPA: [ˈbanai̯ brəˈχəi̯njɔɡ]) are a mountain range in South Wales. In a narrow sense, the name refers to the range of Old Red Sandstone peaks which lie to the south of Brecon. Sometimes referred to as "the central Beacons" they include South Wales' highest mountain, Pen y Fan.

The Brecon Beacons National Park (Welsh: Parc Cenedlaethol Bannau Brycheiniog) is one of three national parks in Wales, and is centred on the Brecon Beacons range of hills in southern Wales. It includes the Black Mountain (Welsh: Y Mynydd Du) in the west, Fforest Fawr (Great Forest) and the Brecon Beacons in the centre and the Black Mountains (Welsh: Y Mynyddoedd Duon) in the east.

Corn Du is a summit of the twin topped Pen y Fan and the second highest peak in South Wales at 873 m (2,864 ft), situated in the Brecon Beacons National Park. The summit itself is marked by a well structured Bronze Age cairn with a central burial cist like that on nearby Pen y Fan. The two summits are visible from great distances owing to their height above the surrounding moorland, and are famous landmarks.

Cribyn is a mountain in the Brecon Beacons with an elevation of 2608 feet (or 795 metres) about 300 feet lower than the neighbouring peaks of Pen y Fan and Corn Du. It is a prominent peak in the long and impressive escarpment facing north and running roughly east–west of the central section of the Brecon Beacons.

Pen y Fan () is the highest peak in south Wales, situated in the Brecon Beacons National Park. At 886 metres (2,907 ft) above sea-level, it is also the highest British peak south of Cadair Idris in Snowdonia. The twin summits of Pen y Fan and Corn Du at 873 m (2,864 ft) were formerly referred to as Cadair Arthur or 'Arthur's Seat'.

Y Gyrn is a top of Pen y Fan in South Wales, situated in the Brecon Beacons National Park. Tommy Jones' Obelisk is found in between the summit and Corn Du.The summit is a boggy mound overlooking the A470 and the Storey Arms. It is marked by a pile of stones.