The site of a possible fort dating to the 11th century AD.  The enclosure measured over 25 metres in diameter and was still visible in 1927 according to C.H. Cowley. It was situated on the most prominent part of Congary Brooghs, overlooking the river to the south, where the Peel Golf Links are now located. The earthwork was said to have been built at the time of the Battle of Santwat in 1098.