Hi Mr H,
The photo was given me by an uncle who was lucky enough to convince a local pilot it would be great to fly around Cornwall taking lovely photos of stone cirles and Hillforts. It is quite possible that being up so high where you can easily lose your bearings that he got the wrong site.

I think if I study Craig Weatherhill's books may be able to work out which one it may be. Thanks for pointing this out. Carry on with the good work.

Phil