Coordinates: 42° 44' 30.5232" N, 70° 51' 0.8244" W
Greenbelt parcels in the Rowley Marshes total about 175 acres, with the largest parcel being the 105-acre Alexander Salt marsh. The Rowley Marshes are part of The Great Marsh, which extends from Southern New Hampshire to Gloucester, and is the largest salt marsh ecosystem in the Northeast. The salt marsh is the single most important habitat in New England for the production and maintenance of life.
Actitivities include: hiking, birding & nature study, cross country skiing & snowshoeing.