Size: 89 acres
Trails: One out-and-back with a loop section; total distance about 1.5 miles.
Features: Forested wetlands, pitch pine forest.
Be Aware: Some of the healthiest insect populations on the island are found here; many hikers will want to use repellents here from mid-May through early July. Because this preserve is surrounded by large tracts of forest land, people or pets who wander off-trail can easily lose their bearings.
From the ferry terminal, go left on Sands Road for 0.4 miles, then right on Old Harbor Road for 0.3 miles, then bear left onto North Haven Road for 2 miles. The gravel road to Folly Pond will be on your left; the parking lot is 0.3 miles in at the end of this road.