Updated clues. Box in good condition 2-25-16
Short walk, best visited in the off seasons when the soccer fields are not in use.
From the intersection of Rt. 89 and Rt. 195 in Mansfield Center, travel 1.1 miles on Rt. 89 to a left turn at the transfer station entrance just before Wormwood Hill Rd. Bear right down a gravel and tar road along side the transfer station. You will come to a fork in the road. At the fork you can either go straight past a metal gate or left which goes by the lower soccer fields. At this gate pull over along side the large boulders and walk past the gate up the road to the concession building. Standing in front of the concession window take a reading of 300 degrees and proceed in the direction of the pavilion. You will come to a large rock with a plaque with a dedication to the memory of Lion Ward A. Cornell. Standing in front of the plaque, take a reading of 70 degrees. Proceed down the slight hill, across the soccer field to the distant tree line. At the tree line, proceed into the woods and come to a fallen down stone wall. Look for a large oak behind the wall. On the oak is a blue sign stating " Mansfield Conservation Easement No Public Access". On your side of the wall in front of that tree, your treasure lies. All you need to do is move one small rock and you will find a cavity in the wall with the letterbox.
Before you set out, please read the waiver of responsibility and disclaimer.