The whiner is an odd bird heard to call "why isn't this a traditional" or "why do I have to read the signs".
The posted coordinates bring you to a sign. Clues from it will bring you to the final cache.
Sign: Building the fort wall.
It is estimated the wall was built in YZ0 AD
B = the # of baskets shown on the sign
X = the # of people pouring dirt on top of the wall
A = Y+Z
The final is at:
N39 07.0AB W84 48.8XY
Sum check A+B+X+Y = 18
Hint:
Hidden in a 3 foot diameter stump that is 8 feet tall 5 feet off the trail. You can access the cache from the bottom east side.