Chesterfield Gorge Natural Area is a rock canyon with towering 70-foot walls carved by Wild Brook, with cascades and waterfalls along a 0.7-mile loop trail. It covers only 13 acres but has multiple viewpoints and rock formations. It is open on weekends only from mid-May to mid-October, with the park office staffed Friday through Sunday from 10 a.m. to 2 p.m. When unstaffed, visitors pay at a self-serve Iron Ranger.