Triangle State Forest is 661 acres. Rathbun Hill Road provides access into the forest, crossing the forest from east to west. Vehicle access into the forest is not available during the winter, as the town does not plow Rathbun Road. The town derives its name from its geographical location. Located south of the “twenty towns” in Chenango County, and the “military tract” in Cortland County, the apex of the triangle was formed by the confluence of the Chenango and Tioughnioga Rivers.

http://www.dec.ny.gov/lands/8099.html