The cache as you might guess is not at the posted co-ords etc etc to find final resting place of the "pi" you need to solve the following simple puzzle to find the values for A,B,C,D,E & F.
Being an
irrational number, π cannot be expressed exactly as a
common fraction, although fractions such as DE/F and other rational numbers are commonly used to approximate π.
The following will allow you to Hunt the Pi N 54° 13.(C)(C+E)(D+E) W 001° 19.(F-B)(C+D)(A+E).