Thanks, a hole with a stone around it.
Two things; the first is the small holes that appear on the two standing stones at the cove at Stanton Drew. I'm not sure they are natural,( my idea is almost as nonesensical as candles Nigel,) but if a stone is an "ancestor" could you bleed stones in a ritualistic way.
The other thing is, there were two "Celtic" spoons found round here by a stream. They are given an early iron age date, but again they have holes throught the centre, with swirly celtic patterns on the back. Presumably pre-christian, but very baptismal.