The cache is not at the posted coordinates.
In order to complete this cache you must first do the Adventer Lab Cache called Parr Lake North Park. From each stage you will get part of the coordinates. Once you have completed it, you will have all the numbers you need to find the cache location.
N 43 AB.CDE
W 79 FG.HIJ
Fznyy pnzbrq ovfba. Chyy zr qbja.