Depressions in the tops of standing stones are interesting. There is one in Clare, near to one of the innaugral mounds, which has one. It also has a chunk of a softer stone set into it (natural).

It was said that as part of the Kings innauguration he would wet his hands in the hollow and rub them on the softer stone. This would produce a soapy substance with which he would cleanse himself.

There are many ways in which water collected in 'special' stones could have been seen as magical, especially if the water picks up minerals from the rock.

There seem to be quite a few examples of one stone in a circle or a single stone having a depression in its upper surface exagerated by the hand of man.

What do they mean?

Haven't got a clue!