It might have come up before, but has anyone got any links or books to recommend about carved stone balls like these? They've been found all over the place in Scotland. Some of them remind me of inverted rockart, bumps instead of dips, raised patterns instead of grooved ones.
There are no books on carved stone balls that i know of .Although there are a couple of good PSAS articles ,particularly the one by Dorothy Marshall .I'll dig out the details . They are very localised to Aberdeenshire with just a few strays in Fife , Angus and futher south and west . The Towie ball is incredible and certainly has similarities ,like others with RA .