Castle Tump

This early 11th-century Norman motte-and-bailey fortification was built by Bernard de Neufmarche, the half-brother of William the Conqueror. It is thought to have fallen to a Welsh attack sometime between 1121 and 1136, and after short abandonment was possibly rebuilt by Walter Clifford in the 1150s, with Edward I of England spending three days in Trecastle quelling a revolt in 1295. At 6.6 m high it is the largest motte and bailey the Brecon Beacons National Park (). The motte is 50 m by 38 m, with a flat summit of 24 m by 16 m, and the bailey (to the south west side of the motte) is 56 m by 40 m. The original footprint of the bailey platform was 115 m long by 45 m wide. Originally both…