More than 400 rock paintings adorn the Canadian Shield from Quebec, across Ontario and as far west as Saskatchewan. The pictographs are the legacy of the Algonkian-speaking Cree and Ojibway, whose roots may extend to the beginnings of human occupancy in the region almost 10,000 years ago. Archaeologist Grace Rajnovich spent fourteen years of field research uncovering a multitude of clues as to the meanings of the paintings. She has written a text which is unique in its ability to «see» the...