I was at this (very nice) cross slab near Bantry today, this site is very unusual to say the least! There are loads of small stones pushed over around the top of the hill where the carved slab stands and around them is a circular-like bank up to two foot high in places.
I dont know anything about the history of the place but as I looked around I got a very definite feeling that this was once the site of a stone circle of the 'Carrigagulla' type with lots of small stones. It looked like four stones had been carved and placed around the slab in a square. The carvings were long, deep and straight gouges all the way down one side terminating in a cube cut out of the top side of the stone. What struck me was that the stones seemed to have been carved like that and then stuck into the gound upside down! One has been uprooted and it domed top was once at the bottom of the socket. Other similar stones are just lying around the place and one very small one looks like its just been pushed over a bit.
Here's the slab:
http://cloghmore.bravepages.com/cork/kilnaruane.html
Anyone with info, please let me know. I had a feeling this was a strange christianising ritual to destroy a stone circle but would love to know either way.