In order to provide for public outdoor recreation use and enjoyment of certain significant shoreline lands and waters of the United States, and to preserve related scenic, scientific, and historical values, there is established in the State of Georgia the Cumberland Island National Seashore (hereinafter referred to as the “seashore”) consisting of the area generally depicted on the drawing entitled “Boundary Map, Cumberland Island National Seashore”, numbered CUIS 40,000E, and dated January 1978, which shall be on file and available for public inspection in the offices of the National Park Service, Department of the Interior. The Secretary of the Interior (hereinafter referred to as the “Secretary”) may after notifying the Commi