This Letterbox Cache is not at the Posted Coordinates
You are looking for a small twist top container, similar to a peanut butter Jar. It is hanging in plain view, and should be easy to spot from 25 metres away. As this is a letterbox cache, it contains a stamp, the must remain in the cache container as this is a requirement for a letterbox hybrid cache.
This container was placed in the Spring of the year, when Milli (the BugFinding Pooch) and I were last in this park. While here this evening (A full season later), I remembered I had placed a cache here, and double checked my coordinates, and the cache itself. Yup, both were good - I must have had new batteries in the GPS when I took them 
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To Locate the Final, you must first visit GZ, and locate a large blue number (white outline) on a nearby tree. Use this number, in the formulas below to determine the distance and degree, to project a waypoint to find the final location. This Letterbox cache should be easy to spot from a distance, as it is hanging in plain view.
To find the distance for the projection = number on the tree x 10 + 0.8
To find the Bearing for the projection = number on the tree x 33 + 4.3
Good Luck and Happy Caching!