The northern environs of Garn Boduan’s upper fort – the equivalent of a medieval keep, if you like – are occupied by a large stone pile which Heneb interpret as a massive, disturbed Bronze Age cairn. Probably unopened, thanks to the protective Iron Age works superimposed.
Once again we have clear evidence of Iron Age peoples incorporating an earlier funerary monument within their planning regardless of the obvious spacial impact. The assumption must be that they viewed these monuments as being highly important.