The cache is not at the posted coordinates. The posted coords will bring you to the start of the night cache. Follow the firetacks to reach the cache. Along the way, you will need to find a clue at each of the double tacks to be able to locate the final cache.
Note: This cache was placed in Jonathan Dickinson State Park as part of Cacheapalooza 8, with the permission of Martin Morse, Park Service Specialist. If you park anywhere in JDSP, make sure all your tires are off the road and you are not blocking any gates. Do not speed through the park.