“Underground Hudson” Bonus Cache
This cache is not located at the posted coordinates, but it is a good place to park. The cache is a short walk from parking.
In order to find this cache, you must first complete the "Underground Hudson" Adventure Lab. You will need a smart device with wifi and GPS capability to complete the Adventure Lab, which requires visiting the five locations of the Adventure Lab and answering a question at each one to earn a find. Completing the Adventure Lab will add five lab cache finds to your total. The Adventure Lab does not need to be completed in a single day, but the stops need to be completed in order.
Download the Adventure Lab app to your smart device and look for "Underground Hudson" in the directory, or you can go directly there with this link. ("Underground Hudson" Adventure Lab)
Once the Adventure Lab is completed you will be given the last 3 digits of the North and West coordinates for this bonus cache in the final journal entry. Be sure to go back and scroll through each one, because the final journal entry gets bypassed when you initially complete the Adventure Lab.
Note: Daylight Hours Only!