Old GPS does not have this on its maps, even though the camp has been there forever.
Shadow Lake Camp
15041 Ninth Line, Whitchurch-Stouffville, ON L4A 7X3, Canada
I found it on Google Maps but it would not give me a proper GPS coordinate, so I tried the “share”, which gave me incorrect map coordinates. Clicking off the exact location gave me GPS coordinates which I could then tweak for the proper location.
Plus Code: 87P22PPH+3R
Sometimes Google will put you off your game, so double check!