On the hills south of NY 165 between Decatur and Roseboom in rural Otsego county is the 1,749 acre Bear Swamp State Forest. The center point of state forest is Bear Swamp Pond which is popular fishing destination. Remote and hilly, there are no developed trails or campsites besides a path down to lake.

https://andyarthur.org/decatur-state-forest
http://www.dec.ny.gov/lands/102478.html