Where did I hide that cache ? Traditional Cache

This cache is not far from parking down the main trail a few feet off a dirt path in the Delhi Township Story Woods Park. 

This cache might be really tricky to find. So, When found please replace exactly as found. Very near GZ you will see a black string wrapped around a tree. Could it be on the tree? Maybe or maybe not. Once you see that. You know your there or close. Permission for this cache was given by Joshua P. Torbeck. The Director of Parks & Recreation in Delhi.