nix wrote:
http://www.themodernantiquarian.com/post/124414/overton_hill.html
We were on the hill at the weekend and noticed this circular shaped formation on google afterwards. Is this one of the two ruined circles mentioned on the 1925 map?
I only know of two 'possible' stone circles outside of Avebury, namely Harestonedown and Langdean - both quite a way from Overton Hill. The circle in the link looks more like an old crop circle.
Edit: I think that's what tsc (and Tiompan) said - sorry to be repetitive.