Corn Du the last ice age by ice scouring out hollows below the peaks, the water being partly dammed by moraines of rock debris carried down by ice action subsequent to plucking and frost shattering. 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
Muránska planina National Park about 25 km. The lowest situated site in the national park is located close to the village of Muráň at an altitude of 400m AMSL. The highest point is Fabova hoľa at 1,439 m AMSL, however, a higher peak, Stolica at 1,476 m is located in the buffer zone. Stolica is also the highest peak of the Slovak Ore Mountains. There are more than 150 notable caves, which are inaccessible to the public. Flora in the National Park is notable for its biodiversity and species richness and includes 35 endemic and sub-endemic species, for example, "Daphne arbuscula". Forests cover about