The cache is NOT at the posted coordinates.
In order to obtain the actual coordinates, you must complete all five locations of the "Historic Rte 302 New Hampshire" Adventure Lab
The adventure lab will take you on a driving, historical tour of historic Rte. 302 in New Hampshire. The journal entries in the lab will provide the coordinates to find this mystery cache. You must find all 5 locations in order to log this cache. Without too much snow, this should be an easy find. Difficulty rating takes into account time spent on the Adventure Lab.