Gateway to Huronia
From this lookout may be seen the bay which, during the first half of the 17th century, formed the western terminus of the 1280 km route connecting New France with the Huron settlements. Heavily laden canoes ascended the Ottawa, surmounted the rapids of the Mattawa and French Rivers, crossed Lake Nipissing and traversed the island-studded channels of Georgian Bay. Over these waters passed Récollet and Jesuit missionaries, Etienne Brulé, Samuel de Champlain and other heroic figures of the French regime.
Plaque via Alan L. Brown's site Ontario Plaques. Full page here.