village on the north shore of the peninsula, which was abandoned after the dispute ended and was entirely burned in 1890. The camp site includes three surviving buildings from the American military occupation: two officers' quarters, and the house and working quarters of the camp laundress. Recreation The park encompasses 2,146 acres, divided between two sites American Camp on the south end of San Juan Island and English Camp on northwest side of the island. Entry to both areas is free, and both include visitor centers. American Camp has three mapped hiking trails, including one to the summit of Mount Finlayson. English Camp includes the Bell Point Trail, Young Hill Trail and Mitchell Hill Trail Network. American Camp includes South Beach on the Strait of Juan De Fuca, with views of the Olympic Mountains, and 4 July Beach on Griffin Bay. Both English and American Camps have kayak launches. Wildlife The American Camp prairie is home to the world's only viable population of the island marble butterfly (Euchloe ausonides insulana). The butterfly was thought to be extinct for 90 years before being rediscovered in 1998, and was listed as endangered in 2020. Bird species commonly spotted at American Camp include bald eagle, Harrier (bird), Harlequin duck, American goldfinch, Great horned owl and Osprey. Foxes are commonly spotted, especially on the American Camp prairie, where they prey on rabbits. Orca, humpback, and gray whale can be spotted on occasion from both parks. References External links National Park Service's San Juan Island National Historical Park website General Land Office Record of the Week highlighting San Juan Island National Historical Park National Historical Parks of the United States Parks in San Juan County, Washington Pig War (1859) National Historic Landmarks in Washington (state) Protected areas established in 1961 National Park Service areas in Washington (state) Closed installations of the United States Army American Civil War army posts Museums in San Juan County, Washington History museums in Washington (state) Forts in Washington (state) 1961 establishments in Washington (state) Military facilities on the National Register of Historic Places in Washington (state) National Register of Historic Places in San Juan County, Washington Parks on the National Register of Historic Places in Washington (state) Historic districts on the National Register of Historic Places in Washington (state)