Did you know that if you calculate thiessen polygons for every stone circle on the island of Britain that you get a very pretty picture which tells you absolutely nothing relevant at all? Pretty though.
@postantiquarian
Actually, that's a rather attractive way to depict the relative density of stone circles in different areas. Now do all of Europe and West Africa ;-).
@yetiinabox it is pretty, that's very true. I would love to have all the data for Europe, Asia, Africa and so on.