The Saco Heath Preserve is a 1,223 acre protected site that features a mile-long trail that consists of a distinctive boardwalk. The preserve showcases a rare raised coalesced bog, the southernmost of its kind, that the boardwalk takes you right over. The unique environment nurtures a variety of plants adapted to nutrient-poor soils, including Labrador tea, leather-leaf, rhodora, cottongrass, and scattered pitch pine. It also hosts the only instance of Atlantic white cedar growing on a northern raised bog, with one of Maine's largest stands. This cedar itself supports a population of Hessel’s Hairstreak butterfly, whose caterpillars exclusively feed on it.