This is an Adventure Lab Bonus Cache. The cache is not at the posted coordinates, but would be a good place to park as you do the adventure lab, and then this bonus.
5-15-21 Edit: Normally there is a mowed path that this adventure lab follows, as of today, the path has not been mowed, and the grass on the tour is quite high. Additionally the area between Stages 2 and 3 is often quite muddy for awhile after it has rained, please wear appropriate foot wear.
To find the final coordinates for this cache you must complete the Franklin Farm Adventure Lab. The coodinates for the final bonus cache will be supplied in the 5th journal entry, and a specific hint will be supplied in the 4th journal entry.
Enjoy a walk around what was the last working Dairy farm in Cumberland. Stay on the mowed trails and do not cross any of the planted gardens.
Farm is open from Dawn to dusk, do not attempt Adventure lab or this final at night