Petawawa River - Lake Travers to McManus Lake
(photo 20 of 101)
Bottom of  Big Thompson Rapids on Petawawa River in Algonquin Park

(photo by Diana: 2016-09-10 - map - explore

Looking downstream from the bottom of the Big Thompson Rapids portage. You need to negotiate that little tongue; the portage doesn't go any farther. It's not difficult; the path is obvious; but it must be a nuisance when travelling upstream.