- an active volcano in SW Alaska. 7,500 feet (2,286 meters).
- a national monument including Mt. Katmai and the Valley of Ten Thousand Smokes. 4,215 sq. mi. (10,915 sq. km).
- a volcano in SW Alaska, in the Aleutian Range: erupted in 1912 forming the Valley of Ten Thousand Smokes, a region with numerous fumaroles; established as Katmai National Monument, 10 917 sq km (4215 sq miles), in 1918. Height: 2100 m (7000 ft). Depth of crater: 1130 m (3700 ft). Width of crater: about 4 km (2.5 miles)
