The Lynn Woods Reservation was founded in 1881, the second largest municipal park in the United States, is a 2,200 acre municipal forest park located in Lynn, Massachusetts. The Woods offers over 30 miles of scenic trails for hiking, running, horseback riding, mountain biking (not allowed during the winter), cross-country skiing, and nature walks. Three active reservoirs provide pretty pond-like scenery among natural forestland, as well as clean water for the City of Lynn. Dungeon Rock is a well-loved underground tunnel with a history of pirate lore and treasure seekers. The Rose Garden, Houghton Horticultural Garden, and Amphitheater areas provide more formal settings to explore.