Located in a forest not far from Peterborough, the Petroglyphs Provincial Park is one of Canada’s sacred sites. A petroglyph is a carving in a rock, usually a symbol or picture, that dates back a long time ago, in this case 600 – 1100 years.     august 10 2007 

PS – Just to say it, there is nothing I like about this episode, but according to the rules of my show I have to put it up.