Isle Royale National Park was established on April 3, 1940, then additionally protected from development by wilderness area designation in 1976, declared a UNESCO International Biosphere Reserve in 1980, and added to the National Register of Historic Places in 2019 as the Minong Traditional Cultural Property. The park covers , with of land and of surrounding waters.
isle royale national park was established on april 3 1940 then additionally protected from development by wilderness area designation in 1976 declared a unesco international biosphere reserve in 1980 and added to the national register of historic places in 2019 as the minong traditional cultural property the park covers  with of land and of surrounding waters