The Fort William Reserve, located on the western end of Lake Superior adjacent to the city of Thunder Bay was set aside under the provisions of the Robinson-Superior Treaty in 1850. The north shore of Lake Superior is the southern edge of the Canadian Shield, a vast country of rock scraped clean by glaciers and waterways. The traditional territories occupied and used by the Chippewas at Fort William and their residence stretched from Pigeon River to the south, north to Treaty 9 boundary and east to Lake Nipigon.