The "dragon" graffito that the Norse vandals scratched onto the walls of Maes Howe in Orkney [along with a load of other rather impressive runes] when they broke into the tomb. Do it now at say Stonehenge and you'd be up in court on a charge of desecration of an ancient monument. The most popular theory is that it is the dragon of paganism being slaughtered by the Christian crusader. I don't offer up any of my own thoughts on the matter save that he looks rather more like a canine to my eyes. Maybe we're just all over intellectualising it and it was just somebody's pet pooch! I expected him to be huge, but the original only reaches the heady heights of 2"! I bought the picture whilst there as a momento of our visit last summer.