I was out exploring the back roads around this area and managed to see a feral cat near GZ, this is a cache to represent the location.
At the posted coordinates find the numbers represented by ABC -D
The cache can be found at: S34 19.(A+B+C)(A+B)(A-1) E138 39.(B*2)(B*2)(A+B)
Check sum = 18 + 14 = 32