Located at Worth Family Nature Preserve with permission from Darke County Parks. A trail map may be helpful for this one, but not required. Park is open from sunrise to sunset. No restrooms or drinking water, so plan accordingly. Please stay on established trails until you reach GZ, follow all park rules, and replace the cache how it was so it can't be seen from the trail. CITO and BYOP. The coordinates will take you near the edge of the preserve's property; DO NOT cross the fence.
UPDATE 08/11/19: Due to lack of maps and cell reception, I have updated the hint to get you very close (so don't look if you enjoy the challenge). I would also recommend you either add this cache to a list and download it for offline use in the official app, or bring a proper GPSr.