tag:blogger.com,1999:blog-9165239637204013057.post215631284393050072..comments2023-06-23T12:08:36.704+01:00Comments on Tyndall Mountain Club: New 4000 year-old artwork!kevin higginshttp://www.blogger.com/profile/01249973269592517658noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-9165239637204013057.post-34086198967756146672011-04-25T21:54:25.586+01:002011-04-25T21:54:25.586+01:00See the following for a technical paper on the lev...See the following for a technical paper on the level of communication ascribed to petroglyphs: http://www.semioticon.com/virtuals/arch_behaviour/lee_1.pdfkhkkhttps://www.blogger.com/profile/06207918252805714400noreply@blogger.com