A range of southern Quebec, Canada, north of the St. Lawrence and Ottawa rivers. Rising to 960.8 m (3,150 ft), the mountains are a year-round recreational area. Range forming the Quebec portion of the Canadian Shield, bounded by the Ottawa, St. Lawrence, and Saguenay rivers. One of the oldest mountain ranges in the world, it consists of Precambrian rocks more than 544 million years old. It has greatly eroded over time, and its highest peak measures only 3,905 ft (1,190 m). Two provincial parks there are popular vacation areas
A plateau region of eastern Canada extending from the Great Lakes and the St. Lawrence River northward to the Arctic Ocean. The highland formation also covers much of Greenland and forms the Adirondack Mountains in the United States