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
Ordesa y Monte Perdido National Park i Santaló and Lucas Mallada helped promote the reputation of the region and obtain protected status for it. An area of 21 square kilometres containing the Ordesa Valley was declared a National Park on 16 August 1918 by a Royal Decree. On 13 July 1982, it was enlarged to its current 156.08 km2 and its official name was changed to "Parque nacional de Ordesa y Monte Perdido". Ordesa y Monte Perdido National Park Ordesa y Monte Perdido National Park (Parque nacional de Ordesa y Monte Perdido) is an IUCN Category II National Park situated in the Pyrenees of Huesca province,