These caches, can not be accessed as a drive by, park and grab.
There a a rusty barb wired fence separating the road from the Bruce Trail, and a second fence separating the Quarry from the Bruce Trail. The Bruce Trail runs between these two fences.
Do not cross either fence, all caches can be reached from between these two fences.
Take some time and enjoy the hike! Nice section of the trail for the kids too!
Access to this section of the trail is provided as an additional waypoint.