This is a letterbox, please don't take the stamp
There is a parking lot for about 4 cars near the GZ.
At the GZ you will see trail marker.
If the colored circle at the top is white - final is at
N39 03.147 W84 07.851
If orange then
N39 03.137 W84 07.853
ODNR Permit EF-03-22-24
Here's a great park map https://drive.google.com/file/d/1S4sbMYyGic1Utrfag6rHqM9xTjUzjx7w/view?usp=sharing
You are looking for a metal water bottle in the middle of a 3 trunk tree.