***PLEASE READ THE DESCRIPTION***
The listed co-ordinates should lead you to a pole. There is nothing placed here but a couple of little riddles should get you to GZ.
Arriving at the listed co ords (pole 1) : "With your back to the pole, look for an S. Another pole but smaller, that's the right guess"
Arriving at pole 2 (after solving the riddle above) : "For pole number three, look left across the street, it's not where you started, and the cache is under your feet"
Good luck, and enjoy :)