The Brecon Beacons are a mountain range in Wales. The range includes South Wales's highest mountain, Pen y Fan, its twin summit Corn Du, and Craig Gwaun Taf, which are the three highest peaks in the range. The Brecon Beacons have given their name to the larger Brecon Beacons National Park, and the range itself is therefore sometimes known as the Central Beacons to differentiate the two.