Requires the department of natural resources (department), before January 1, 2026, to designate at least one undivided area comprising at least 10% of each state forest as an old forest area. Provides that, wherever possible, the size of a designated old forest area must be at least 500 acres. Sets forth certain purposes to guide the department in designating the old forest areas. Prohibits the department from conducting or allowing timber management in the old forest areas. Requires the department to produce and keep on file maps and legal descriptions of the designated old forest areas. Provides that the designation of the old forest areas may not affect hunting, fishing, trapping, and other recreational uses of the state forests, the maintenance of access roads in the state forests, or rights of access through the state forests.