The castle at Clyro is mentioned as being defensible in 1304 and buried remains were uncovered at this location in the early nineteenth century. The earthworks visible today include an oval scarped, ditched and counterscarped enclosure, c.65m NE-SW by 57m. There is a south-west facing entrance possibly adapted from a natural eminence.
(source Os495card; SO24SW15)

J.Wiles, RCAHMW, 03 November 2004