This cache is not at the posted coordinates, but it is located inside Wheelock Park in Keene. The Adventure Lab will feature a tour of Wheelock Park.
The actual coordinates can be found in the answers you get when you complete stages of the Adventure Lab. Coordinates are N42 56.ABB and W072 18.CDE where A, B, C, D, E, and F will be given to you as you proceed through the Lab.
The cache is a micro, but large enough to fit a tiny pencil in.