Corn Du Corn Du Corn Du is a mountain immediately to the southwest of 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. The views from the peaks are also panoramic and very extensive, the Black Mountain and Fforest Fawr being especially obvious to
Namadgi National Park of Canberra's water. In this sub-alpine region the weather ranges from cold winter nights to warm summer days, and it can change very quickly. Snow normally falls on the Bimberi and Brindabella Ranges during winter, and is not uncommon throughout most of the park. The highest mountain is Bimberi Peak at which is the highest peak in the Australian Capital Territory. The national park is classified as an IUCN Category II protected area. "Namadgi" is a local Aboriginal name for the mountains situated to the southwest of Canberra. Aboriginal presence in the area has been dated to at least 21,000