Visited 1992 and 1994
Though now ruled by cattle, once fit for a king. This Iron Age hillfort was re-occupied and refortified on a large scale during the Late Roman or sub-Roman period. No doubt about that part. As to the builder, without any written evidence we will be kept guessing. Ambrosius Aurelianus? Possibly, but can’t be sure where to locate him. Arthur? No contemporary evidence available. Whoever it was, it has been proposed by experts that the massive workforce neede to strenghten Cadbury’s defences can be compared to the workforce of both Wansdyke and Bokely Dyke, earthwork that are very close by.
My solution: if not Arthur, than surely a different person with the same name :-)