Washington, while Winthrop lies to the east and Hope, British Columbia to the north. The entrance to the complex lies east of Interstate 5. No entrance fee is charged for North Cascades National Park, Ross Lake National Recreation Area, or Lake Chelan National Recreation Area. See also Ecology of the North Cascades References External links National Park Service: North Cascades National Park Service Complex National Park Service: Boating on Ross Lake Skagit Valley Provincial Park National Park Service areas in Washington (state) National Park Service National Recreation Areas Protected areas of Skagit County, Washington Protected areas of Whatcom County, Washington