A nice easy multi along the Apps Mill trail. Title has nothing to do with the cache, it was what was playing in my headphones while I was hiding the final.
At the posted coordinates you will find a bench with an inscription on it.
Using A=1, B=2 etc. sum the consonants that appear only once, add 5, and then subtract from the posted WEST coords.
A few steps away from the bench is a set of stairs. Count the total number of vertical posts here, subtract 2, and then add to the posted NORTH coords.
Follow the trail and it will bring you very close to the final. Have a nice hike!