Those rocks are amazing - one of my contributions can be the 'quack' explanations of why archaeologists &c argue so much - 'Crab' in the horoscope.

Try making a megalithic inch ruler - anything would be neater than this one http://www.themodernantiquarian.com/post/21366 - and fitting it to those panels another time. I think the unit is 0.814 imperial inches. For some reason or other I suspect that the Megalithic Inch was used in the Neolithic and we changed units with the Beaker People.

I used to be told that Global Warming was nonsense (in 1980) - all I'm saying is 'please try it'.