Menemsha
The town includes the island of Noman's Land, which lies southwest of Martha's Vineyard. Because of Noman's Land, the town is officially the second most southerly point in Massachusetts (the south shore of Nantucket is approximately a kilometer south of the southernmost point on Noman's Land).
Chilmark has a series of small ponds along the Atlantic side of the town, and it shares Tisbury Great Pond to the east and Menemsha Pond and Squibnocket Pond to the southwest, along the Aquinnah town line. It is between these two ponds, which are 1,100 feet (340 m) apart at their closest point, that the only road to Aquinnah passes.
Long Beach, privately owned, runs along the southern side of Squibnocket Pond and technically connects the towns. At one point in the late 17th and early 18th century, Squibnocket Pond was open to the sea. However, the barrier beach with its sand dunes eventually closed this opening permanently. Occasionally in winter storms, waves will wash across low points in the beach, but the beach itself has not been breached in a hundred years, unlike other barrier beaches on Martha's Vineyard.