Cache is a field puzzle you'll need to solve to get the final coordinates. You'll be solving for the final 3 digits of both the North and the West. FInal is located at N 38 12.### W 85 15.###.
At stage 1, you're looking for a camoed water bottle that is magnetized to the GR. I recommend taking the container to your vehicle for solving. You'll be solving for a six-letter word and then figuring how to get the final coordinates from what is in your hands (no internet or cypher solving needed). The final location is nearby but not directly next to stage 1. Make sure to rehide the puzzle and container before heading off to stage 2
Checksum for the six digits is 33.