Lakes Region Conservation Trust (LRCT) has conserved this land and added new trails and has allowed geocaching. In fact, this cache was hidden as part of an event on September 10, 2016: LRCT Breakfast by barefootgal: https://coord.info/GC6MR7F
The cache is close to the trail, but on the other side of a stone wall. If you walk past GZ just a bit, there is an opening in the wall. The container is a large camoued screw-top, nested in a hiding spot.
A map of the trail system can be seen here: http://lrct.org/wp-content/uploads/2016/05/Center-Harbor-Woods.pdf
The trails are often close to roads, but please, you must park in the designated parking area on High Haith Road. Parking along any of the roads and bushwhacking into the trail system is not permitted.