N.B. The term Algonquian (also spelled Algonkian) refers to one of North America’s largest aboriginal language families. Individual tribes or First Nations like the Innu, the Micmac, the Algonquin, the Ojibwe, and the Cree all speak a version of Algonquian. (See here for a primer.)A one-hour drive from Peterborough and the Canadian Canoe Museum and we were approaching the entrance to Petroglyphs Provincial Park. It is a day-use-only park with hiking trails but its real reason for existing is the 90′ x 120′ outcrop of gently sloping white marble (limestone) in the center of the park.