Castle Cwm Camlais (ref SN 95584 26069 )
Ruined Castle near Defynnog built by Humphrey de Bohun Earl of Hereford in the 13th Century . The castle consisted of a motte which supported a single round tower measuring twelve metres in diameter approx . This was surrounded by a rocky bank .Building was destroyed in 1265 . Blaen Camlais standing stones are In the field below the castle .