The Doodletown Wildlife Management Area is 689 acres of public hunting and trapping grounds in eastern Columbia County, acquired by the state in 2017. The area is rolling country that is largely forested.
https://andyarthur.org/doodletown-wma
https://www.dec.ny.gov/outdoor/112438.html
Just to the east of Roseboom is the R. Milton Hick Memorial State Forest, a 1,295 acre forest on the hill to south near where NY 165 turns sharply north as it approaches Roseboom. The state forest is largely undeveloped except for a skil trail that runs from Perry Hill Raod to La Fluere Road.
https://andyarthur.org/decatur-state-forest
http://www.dec.ny.gov/lands/102494.html