McNeil River was declared a National Natural Landmark in 1968 .
In 1967 the state of Alaska set aside the McNeil River State Game Sanctuary with 85,000 acres ( 34,000 ha ) under protection to safeguard the bear fishing grounds on the river , adjacent to Katmai .
McNeil River State Game Sanctuary   was declared a National Natural Landmark in 1968 .
In 1967 the state of Alaska set aside the McNeil River State Game Sanctuary with 85,000 acres ( 34,000 ha ) under protection to safeguard the bear fishing grounds on the river , adjacent to Katmai .