This cache is NOT hidden at the posted coordinates.
In order to find it, you will need to obtain the final coordinates after completing the "Brown's Mill Battlefield" Adventure Lab. They're in the Journal entry for the 5th location.
The park is open daily from dawn until dusk, even though most nights the front gate stays open. Please do not attempt this cache or the Adventure Lab after hours.
Remember to bring your own pen.
Happy caching!!!! 