I saw something like this done when I was on vacation earlier in the summer. I thought this is a great idea! I use to be an English as Second Language teacher so it also honors my former career. This is a series of 26 caches, one for each letter of the alphabet.
This one is "D is for Dread".
I think after a short walk you will get the title and will be able to tell roughly where GZ is without your GPS. Coords were bouncy at best, you'd be better off to use your geo-senses in the area than trust your GPS. You should find a clue I left at GZ to let you know you're in the right place.(it appears the clue has been taken by someone needing it more than you seekers, oh well)
For those finding the nearby box(about 40' from GZ), it is not a decoy of mine but I believe it is an old letterbox. It had a logbook at one point but I hear it no longer does. It is NOT the cache, keep looking. There are decoys in the area that are mine though :)