I was using Waze to get from Toronto to Nattawasaga Bluffs Conservation Area. Last part of the way was Sideroad 15 & 16 Natawasaga. This road is good only for big off-road cars, I was lucky to not kill my Elantra. It is one-car wide not paved road over the rocky hills.
Is there possibility to mark this road as unusable or at least put some warning in Waze app for drivers going this way?
The route to the Conservation area from west (though Concession Rd 10) is ok. My mistake was to go from east (as both Waze and Google Maps suggest).