I think you're mistaken? If you mean this Churchdown Hill
http://www.themodernantiquarian.com/site/9756/churchdown_hill.html
the link shows that it was occupied in the iron age if nothing else. And it's not down as a sacred hill but a sort of miscellaneous settlement. I think that's what I added it as, I don't think it's been edited?? I'm a bit loathe to put things as 'sacred hills' (but sometimes you just can't help thinking it's appropriate)