There is no puzzle to solve as such, but you will need to take something with you before you attempt this cache, I will expalin later.
Please please replace the cache the same way up as you have hopefully retrieved it.
Also, make sure the cache is water tight when you have signed the log.
Although this location appears quiet please watch out for muggles as this may attract attention and may get muggled
If any maintainance is required please let me know.
Your looking for the GZ which is off the path slightly to the right as you enter GZ from the main road, just behind a large tree.
Please dont attempt to retreive the cache without using the 'hint item'
You will need to sign the log book to claim this find.
Good luck and Happy Geocaching.