I just read your field notes and looked at the photos
for Tormain Hill. Simply Stunning !!
I was looking through the images from end to start for some reason and so came to the 'viewfinder' one last. When I reached the third (second really) I thought, "That looks like a couple of carvings that I have suspicions about, I must ask Martin what else is nearby." And then I see your 'viewfinder' comments. I have been very curious about many such petroglyphs for some time now and, maybe not with all of these, I certainly do get the impression of 'a map' when compared with local sites.
Most of the ones in Ireland are in passage tombs and there is one I am particularly interested in which is unfortunately not in situ anymore. What it does display though (quite clearly in my oppinion) is a very good drawing of Newgrange !! I have still to test my views out with the 'establishment' yet and so I won't say too much more.