Denali National Park and Preserve was originally authorized as Mount McKinley Park in 1917. Its primary purposes were to serve as a game refuge and provide public recreational opportunities. With the passage of the Alaska National Interest Lands Conservation Act (ANILCA) in 1980, the park was expanded and two national preserve areas were added. Sport and subsistence hunting is permitted in these preserves, with subsistence harvest also occurring in the park additions. The original extent of Mount McKinley Park is now designated as wilderness.