 Approximately 4.5 miles of the beach is owned by Duxbury Beach Reservation, Inc, which leases a portion of the beach out to the town of Duxbury on a yearly basis, under the circumstances that the town of Duxbury provides Harbormasters to police the area.It is a barrier beach, defined by sand dunes, "Rosa rugosa", and beach grass.It is 50 yards wide at some points, and is the sole land access to the villages of Saquish and Gurnet Point across the town line in Plymouth, the only land area where the two towns meet.