Kobuk, << KOH buk or koh BUK, >> Valley National Park is in northwestern Alaska. It is bounded by the Baird Mountains on the north and the Waring Mountains on the south. The park includes forests and a treeless area called tundra. The Great Kobuk Sand Dunes, one of the few sand dunes in the Arctic region, lies near the center of the park. Black bears, grizzly bears, caribou, moose, and wolves roam the area. The area became a national monument in 1978 and a national park in 1980. For the park’s area, see National Park System (table: National parks) .