This is a challenge cache and there are two simple requirements.
First you have to have found at least 15 virtual caches (with the cool ghost symbol) in one calendar day (midnight to midnight). Previous finds do count and any virtual cache that has been listed on geocaching.com can be used.
Second, the posted coordinates are fake and you have to get the correct coordinates by solving the following simple puzzle. Correctly guess the number of virtual caches you will have to find in a single calendar day to qualify for this challenge. Subtract that 2 digit number from both N and W to get the correct coordinates.
Only after you have met the two above requirements can you log this cache as a find. You can visit the cache if you’re in the area to sign the log or trade TBs/geocoins but you can only post notes on line until you have completed the two requirements.
Note that I know of 2 cachers in NH who already easily qualify for this cache. Good luck.
Note there is a FTF prize only for a cacher logging this cache as FTF found.