This outstanding botanical site is perhaps the southernmost example of a raised bog in North America, dating back 12,000 years when glacial activity created adjacent water-filled kettle holes. Saco Heath formed when these ponds filled with decaying plant matter which became peat. With each year’s plant growth adding to the peat accumulation, the two peatlands eventually grew together above the water table to form a raised, coalesced bog. We'll stay high and dry along the bog boardwalk as we tour this extraordinary habitat. The flora we should encounter includes tamarack, black gum, labrador tea, leatherleaf, pitcher plant, cotton grass, sheep laurel, cranberries and Atlantic white cedar. Bring lunch and a hand lens if you have one.