There was in years past a trail/route up this canyon, but it is no longer shown on the official maps. Due to the snow clogging it April 29, 2016 I was not able to determine if it was still viable.
Sleeping Giant Provincial Park. Ontario Canada.
From a poster on another site: "..but we were told by a ranger in the park office that the old trail (Chimney Trail), now well hidden, is crumbling and lethal, and the rangers will charge anyone caught trying to use it"