Greenfield State Park is tucked away in this 400-acre park in the southwest corner of the Granite State and features ponds, bogs, and a forest that extends to the shore of undeveloped Otter Lake. Walking paths lead to ponds and other points of interest in the park. A small park store offers refreshments and souvenirs for sale. There are also boat rentals available. The 179-sites at Greenfield State Park Campground include 134 sites available by reservation only; 5 for youth group reservations; and 45 sites for first-come/first-served campers. RVs are welcome in sites where they fit.