TrailTrack
Bannau Sir Gaer - Picws Du
Wales

Bannau Sir Gaer - Picws Du

749M
2458FT

About Bannau Sir Gaer - Picws Du

Rising sharply above the glacial waters of Llyn y Fan Fach, this dramatic Old Red Sandstone peak marks the high point of the Carmarthen Fans. Its north-facing escarpment offers an exhilarating ridge walk, combining steep drops with a grand sense of space that defines the wilder, western reaches of the Brecon Beacons.

Key Statistics

Rank
13th Highest in Wales
Parent Range
Brecon Beacons
Prominence
?
93.2m
Nearest Town
Llanddeusant
Geology
You are walking on layers of rugged sandstone and hardened mud. These sturdy rocks form the dramatic cliffs and steep ridges that define this mountain.

Find It

OS Grid Reference
SN811218
Latitude
51.8820°N
Longitude
3.7288°W

Did You Know?

  • Bannau Sir Gaer translates from Welsh as the 'Peaks of Carmarthenshire,' while Picws Du means 'Black Peak.' The name reflects its position as a high point of the historic county and the dark, shadowed appearance of its north-facing cliffs when viewed from the valley floor.
  • The summit offers a commanding view over the deep glacial cirque containing Llyn y Fan Fach. Looking north, the green expanse of the Tywi Valley unfolds, while the distant, rounded silhouettes of the Cambrian Mountains are frequently visible on clear days.
  • As both a Hewitt and a Nuttall, this peak is a staple for list-baggers. It is most commonly climbed as part of a classic horseshoe loop that connects it to the higher Fan Brycheiniog via a narrow, spectacular ridge path.
  • The cliffs below the summit are central to the 13th-century legend of the Lady of the Lake. Local tradition says the 'Physicians of Myddfai' descended from a mystical woman who emerged from the water directly beneath these crags.
  • The summit plateau is notoriously peat-heavy; walkers often find the most technical part of the day isn't the climb itself, but the tactical footwork required to avoid leaving a walking boot behind in the saturated ground.

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3D Flyover

Experience a virtual tour of Bannau Sir Gaer - Picws Du with our interactive 3D terrain map.