I was born and grew up around here. There is much more that isn't really known about. Stone rows in the woods, single standers on the Gordano valley floor etc.
There used to be several circles on the hills but they have long gone,
See http://www.bl.uk/onlinegallery/onlineex/topdrawings/s/005add000015547u00013000.html
PeteG
Something is not right. This message is just to keep things from messing up down the road