There is a small letterbox stamp in the cache, please leave this in the cache after your visit.
Waypoint averaging has been used to set the co-ordinates, but tree cover could be problematic, especially at certain times of the year.
A parking waypoint for a couple of cars in Yewberry Way is given below. Go through the gate to pick up the path which will lead you to GZ.
Edit: 28th Nov 2015 - open to all.