Great Dog Portage
This portage was one of the steepest on the Kaministiquia canoe route between Lake Superior and the West. First recorded in 1688 by the French explorer Jacques de Noyon, it was abandoned after 1732 in favour of the shorter and easier Grand Portage-Pigeon River route. The latter came under American control following the treaty of 1783, and about 1803 traffic was resumed on the older route. Over 3 km in length and involving an ascent of nearly 150 metres northbound, Great Dog Portage connected Dog Lake and Little Dog Lake. It was one of the major obstacles bypassed by a road built 1868-70 from Fort William to Lake Shebandowan as part of the "Dawson Trail".
Plaque via Alan L. Brown's site Ontario Plaques. Full page here.