Update 12/23/20: Sadly, the once "majestic" mossy stump is now just a pile of rubble. Cache has been moved a short distance farther from the trail.
I was hiking back up toward my car from School Road when I noticed the very interesting stump. Kind of looks like it was burned inside at one time, but now is covered over much of its height with lush moss. Don't know if it is like that in the summer, but it is now.
Watch out for the normal hazards when approaching GZ. I didn't see any PO, but there is a lot of low growth on the route to and near the hiding spot, so there could be PO "lurking" there waiting to pop up in the spring, so be alert.
I don't think it is likely that muggles will venture to GZ, but one never knows, so please be sure the cache is hidden using the natural camo materials.