This cache is not at the posted coordinates. Do not look there. To find this cache, decode the cipher below.
abegumrebguerrfvk
mrebbargjbbargjbr
nfgbargjbfvksbhe
sviravarmrebsbhe
If you need more clues, it may be helpful to play the Wherigo designed to look around this park.
You can validate your puzzle solution with certitude.