This is a letterbox, please don't take the stamp
At the posted coordinates you will find a trail sign for the Whipperwill Trail
If your location is "B" the final is at N39 02.853 W84 06.079
If your location is "E" the final is N39 02.784 W84 06.049
You are looking for a metal water bottle under a white rock
ODNR Permit EF-02-012-24
Here's a great park map
https://drive.google.com/file/d/1vN-M0wnOxctzyuZbwmqZ-M6wVak81Z9Z/view?usp=sharing