An island surrounded by salt marsh, Nelson Island is essentially a hayfield, mowed annually, with a dirt road along the south side and a narrow band of trees and shrubs on the north side. Stackyard Road leads out to the island, following a narrow upland peninsula well out into the Great Marsh and offering views of the salt marsh from several places. The Rowley salt marsh, with its creeks, salt pans, wooded islands, and fields, is a feeding ground for dozens of species, many of which will be seen on a walk of the scenic Nelson Island property. The area is a favorite of birders.