Elevated and isolated spot (~10m above the trees?) with a nice view of the park in front of the Tam-Tam. (which are at N45°30.858 & W73°35.111: a big public gathering every sunday of the summer, the montreal way of partying and relaxing :-)
Some people seems to be using the surrounding area to party and make fires but are not cleaning up! (leaving some bottles :-( )
Good shoes are required and the last 30m is a slippery slope (some sand) with rocks and some trees (not a family joy ride, well, unless you are the adam's family :-). I thought that a somewhat hard to reach virtual cache would make it more interesting for those who have more time to discover weird places in the Mont-Royal.
I may hide a real cache around there in the future... (Depending on the feedback i get. This is my first cache: don't be too harsh ;-)
*To verify your find i would like to see a picture of your GPS or you (or both :) in front of the rock with the view of the park and if possible a picture of the surrounding area*