Cache is NOT at the posted coordinates.
This is a bonus cache for the Gap of Dunloe Adventure Lab cache.
At each of the five stages you will have received a clue. Put them in order based on the number of letters of each clue and then enter it as one long string into the checker link below.
So if the five words were THE MOUNTAIN BEHIND A LAKE then you would enter ATHELAKEBEHINDMOUNTAIN into the geochecker.
You can validate your puzzle solution with certitude.