Pictured to the right is the Hidden Valley Trail a 1.6 mile loop, of moderate difficulty, it features forest, meadow, gorge, laurel grove and marsh. Teatown Lake Reservation is a private, nonprofit nature preserve of 730 acres and education center with over 14 miles of hiking trails. The Nature Center is open Tues. 9 am to 5 pm and Sun. Admission and parking are free.
Fees are charged for programs and preregistration is required.
Trails are open from dawn to dusk.