At the posted coordinates you will find a metal sign that ends in 4 numbers
ABCD
X = A / B (A divided by B)
Y = B / C ( B divided by C)
Z = B + C (B plus C )
The letterbox final is located at:
N39 09.6XY W84 34.DZD
This geocache is placed with permission of Cincinnati Parks
Note: during the fall season some trails are closed on some days for professional hunters to thin the deer herd
Use the link below to check on trail closures
http://www.cincinnatiparks.com/programs-and-events/urban-forestry/wildlife-management/
This appears to be zone C