The Wellesley Trails Committee on Saturday, Oct. 18 (10-11am) will lead a free walk at Boulder Brook Reservation in Wellesley.

Explore Boulder Brook Reservation, Rocky Ledges, and Kelly Memorial Park that combine to create a beautiful 64-acre preserve with open fields of flowers and butterflies, babbling brooks, wooded trails, and 550-million-year-old glacial rock that forms the 140-foot high Rocky Ledges. At the top of the ledges, you will see a rolling forest canopy.

Meet at Kelly Memorial Park at 50 Elmwood Road (Use this address for GPS: 61 Elmwood Road, Wellesley).