Hi, I'm 67 and my name is John. Sadly my hill walking days are behind me otherwise I'd be with you upon the moors like a shot Paul. Most of my working life has been spent in in the army and industry and so when I retired I was able to pursue my interest in religious history with a special focus on its prehistoric ritual activity and related myths, what you might loosely call an anthropological study, not that I would fit into or kowtow to such an institution.
I'm particularly interested in the "rock art" you study upon Ilkley moor. I'm not familiar with the place myself so I've just googled it. It appears patterned as if peat was being removed way back whenever? I intend to explore TNA more fully in the days to come, but could you tell me if you have mapped these worked stones and whether they appear in patterns, at certain heights, or in specific areas of the moor?