CianMcLiam wrote:
Bugger, I have the worst luck with email accounts, try [email protected] and I'll attempt to sift through the mountains of junk :)
I think it has worked this time . The capstones that I know of are usually simple cups and could well be have been open air marked outcrops before becoming a capstone . There's something about that in Susan Johnston's paper on Irish rock art in comparisson to megalithic art, I'll have to dig that out and refresh my memory but I think it was due to the significant weathering of petroglyphs used as capstones for bronze age cists, implying they had been exposed for a long period before the bronze age cist was constructed. Makes sense. There's a particularly spectacular one from Ballinvally, near Loughcrew that is in the national museum but unfortunately is not on display, it looks from photos as though it is weathered but not by a huge amount. It's not typical cup and rings though but maybe there are more typical designs found in that context.
