The coordinates will bring you a sign on a rock. Perform the simple math and you will have the coordinates for the cache!
N 35° 03.ABC W 080° 50.XYZ
ABC = Year dedicated - 1400
XYZ = # of vowels on sign + 597
Please be very stealthy when searching for the cache, there are many muggles around here!
Careful not to slip on the goose poop.
Bring your own writing instrument.