The cache is NOT at the posted coordinates. This will add some adventure to your visit, as you will be walking in the woods to reach it.
The given waypoint is the parking area for the Hackensack Mountain Park, off of Prospect St. You will have the cache coordinates when you have completed the Adventure Lab named Warrensburgh Sampler, with the app on a smart phone. Note the clue that you find as you finish each part. Plus, after completing the Adventure Lab, you can open it again from any location and view your Journal pages to get the needed numbers. Those who previously found or looked for the original bonus cache are welcome to check their journals and search for this one as well.
Warrensburgh was settled in the late 1700s, and established as a separate town in 1813. The natural resources and water power potential of the Schroon River attracted a wide variety of industries. Historic buildings remain from many eras since then, and the town has one of the largest numbers of homes on the State and National Historic Register in the Adirondacks. The Adventure Lab takes you to sites related to different aspects of the town's history.
While you are here, there are several other geocaches along these trails and at the summit, where there is a fine view of Warrensburg and the mountains to the west.
Contratulations to Scubakings for the FTF!
The coordinates to fill in are: N43 30.ABC W73 46.XYZ
Link to the Adventure Lab: Warrensburgh Sampler