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. The 257 sites at Greenfield State Park Campground include 200 sites available by reservation only, 5 for youth group reservations, and 52 sites for first-come/first-served campers. RVs are welcome in sites where they fit.