About the Area.
Southbridge Municipal Airport: The airport is owned by the town of Southbridge and home to approximately 43 aircrafts and averages 142 flights daily. NO CACHES ARE WITHIN THE AIRPORT GROUNDS.
McKinstry Brook WMA: 347 acres of forest with McKinstry Brook bisecting the Wildlife Management Area. Some animals you may encounter are beaver, mink, river otter, deer, turkey, and numerous other nongame species.
2011 New England Tornado: The tornado that occurred June 1, 2011 ripped directly thru this area. One of the trails is completely cutoff due to the damage. Do not try and bushwack through this area, turn back and travel in from the other side of the trail.
Wear Blaze Orange: When hiking the trails where you blaze orange as there is hunting allowed in the McKinstry Brook WMA.
How to find the cache:
Within the 25 C-Mass Geofest smiley caches are coordinates in random caches. Collect the numbers to find the Bonus Cache.
Plug numbers into
N 42 06.ABC W 072 02.DEF
THIS ONE IS A BIT OF A BUSHWACK.
You can validate your puzzle solution with certitude.