After solving this one earlier not long after it was published, i knew its exact location very well but had to wait until i finished work to be able to go find it.
as soon i finished work i headed straight to the location, where i found the cache tucked away. there being no logs in the logbook i will claim the FTF @ 4:30pm. Thanks for a great puzzle and a great hiding place. Photo attached to log for MMMM games.

Rated: for Overall Experience.