Corn Du

Corn Du is a mountain immediately to the southwest of Pen y Fan and the second highest peak in South Wales at 2864 feet, 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. The views from the peaks are also panoramic and very extensive, the Black Mountain (range) and Fforest Fawr being especially obvious to the west. Mynydd Epynt is visible to the north behind the county town of Brecon, and other parts of the escarpment to the east.

Access

The summit is often crossed on the way to Pen y Fan, and forms part of a well-known circuit of the Beacons. It offers good views down into Cwm Llwch and across the Usk valley to Brecon as well as east towards the Sugar Loaf, Monmouthshire above Abergavenny.Tommy Jones' Obelisk is found on its western flanks, in between the summit and Y Gyrn. All of the surrounding moorland is open to access, but crossing the many peat bogs is difficult and the paths are well engineered and maintained by the National Trust.