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Variety marks this vast land where lakes, forests, mountains, and marshlands all abound in wildlife. The Alaska brown bear, the world's largest carnivore, thrives here, feeding upon red salmon that spawn in the many lakes and streams. Wild rivers and renowned sport fishing add to the attractions of this subarctic environment. Here, in 1912, Novarupta Volcano erupted violently, forming the ash-filled "Valley of Ten Thousand Smokes" where steam rose from countless fumaroles. Today only a few active vents remain. The park/preserve contains part of the Alagnak Wild River.

Proclaimed as Katmai National Monument Sept. 24, 1918: established as a national park and preserve Dec. 2, 1980.
Boundary changes: April 24, 1931; Aug. 4. 1942; Jan. 20. 1969; Dec. 1, 1978; Dec. 2, 1980.
Wilderness designated Dec. 2, 1980.