The Wilderness Area of Great Swamp National Wildlife Refuge, designated by Congress in 1968, is part of the 100-million-acre National Wilderness Preservation System. It was the first designated Wilderness Area on a national wildlife refuge and the first in the U.S. Department of the Interior. The Wilderness Area exists because local citizens joined with government to preserve this natural area for the continued enjoyment and inspiration of all citizens. Under the 1964 Wilderness Act, wilderness areas are defined as untrammeled, undeveloped, and affected primarily by the forces of nature, providing outstanding opportunities for solitude or a primitive and unconfined type of recreation. The 3,660 acres of the Great Swamp Wilderness Area exemplify these values.