Tanum is on the west coast of Sweden, I went here in the summer of 2005. The carving sites are everywhere in the area, most of them are probably undiscovered because they are overgrown with forest. The rock carvings are from the bronze age, some of them are really big and of a great artistic value, they are coloured red so they are not hard to find. It feels like walking around in a neolithic art gallery. Close to the main area there are a visitors center with amuseum but the enterance to the carving sites is free.