Cache is NOT at posted coords! Do not look there. Instead, try this:
N coords: (N 42 00.652 W 087 55.691) + (N 40 34.633 W073 51.033) + (N 38 52.260 W 077 03.504)
W coords: (N 42 14.400 W 083 19.650) + (N 40 34.117 W 074 07.317) + (N 40 36.236 W 080 18.616)
Congratulations to JBExpress for the FTF
[Puzzle]:Tebhaqrq pbhagf gbb.
[Hide]: gur ubyybjrq bhg bar pybfrfg gb gur ebnq. Yrsg fvqr, ovfba va n ubyr.