Thank you, it was a very interesting afternoon. You don't have to be kind about the moss and lichen, I know it's weird. It was very nice though to see new places around Avebury, especially the little polisher here
http://www.themodernantiquarian.com/site/10827/standing_stone_with_axe_grinding_marks.html (someone needs to get those marks with craftier lighting, you can't really appreciate their thrilling degree of groovishness on the photos so far)
- and all the places really. Excellent.