Katmai National Park and Preserve is a United States National Park and Preserve in southern Alaska, notable for the Valley of Ten Thousand Smokes and for its brown bears. The park and preserve covers 4,093,077 acres, being roughly the size of Wales. Most of this is a designated wilderness area in the national park where all sport hunting is banned, including over 3,922,000 acres of land. The park is named after Mount Katmai, its centerpiece stratovolcano..Wikipedia .