Cache is not at or near the posted coordinates. Figure out the final coordinates by dicyphering the image below:

There are 3 progressive hints for the puzzle if you are getting stuck. Also please feel free to message me. If I don't respond quickly it means I'm traveling, but will get back to you ASAP.
Uvqr: abg tebhaq yriry, fznyy
Chmmyr:
Uvag 1: Gjragl-sbhe tebhcvatf sbe qngn, fbzr vaqvpngr A naq J, fbzr vaqvpngr pbbeqvangrf.