We found this location after leaving the beach and playground with the kids. It is the Somerset Salt Marsh. It is an 11-acre salt marsh located on a small tributary to Labor in Vain Brook. It was recently restored by increasing the flow of salt water into the marsh. In the winter months, the marsh used to be flooded and used as a skating area.
The cache is hidden in the parking area for this one. Should be a pretty easy park and grab.