Summit of Corn Du, in the Brecon Beacons mountain range, Brecon Beacons National Park, southern Wales.
Brecon (brecknock) Beacons, mountain range in the county of Powys, southeastern Wales, extends 2 mi (3 km) east–west, and culminates in the peaks of Corn Du (2,863 ft [873 m]) and Pen-y Fan (2,906 ft).
This article was most recently revised and updated by Amy Tikkanen.