Orris Falls Conservation Area is a 213-acre preserve with 3.76 miles of trails, conserved beginning in 1999. Visitors have a choice of trails ranging from a 1.5-mile round trip to Orris Falls to the 3-mile round trip to Balancing Rock, with the gentle climb to Orris Falls and back completable in a leisurely hour. The terrain is hilly with some steep sections with a large trail network, rated as moderate to difficult. This diverse habitat features beaver wetlands, the gorge of Orris Falls, the Littlefield Homestead, a large glacial erratic aptly named Balancing Rock, and the Big Bump with views of Mount Agamenticus from its summit when the trees are free of leaves. Named features include the 90-ft. gorge of Orris Falls, Big Bump, and Balancing Rock. There are waterfalls, a Littlefield family cemetery and house foundations, and a pond. In the heart of Tatnic, straddling the border of South Berwick and Wells, lies the remains of an ancient volcanic caldera encompassing an extraordinarily rich area of vernal pools and wetlands, with these draining into a marshy area dammed by beaver, then tumbling into a 90-foot gorge called Orris Falls.