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Llullaillaco

(Encyclopedia)Llullaillaco yo͞oˌyīyäˈkō [key], extinct volcano, 22,057 ft (6,723 m) high, on the border of Chile and Argentina. One of the highest peaks in the Andes and perpetually snowcapped, it overlooks a...

Hood, Mount

(Encyclopedia)Hood, Mount, peak, 11,235 ft (3,424 m) high, NW Oreg., in the Cascade Range, E of Portland; highest point in the state and the center of Mt. Hood National Forest. A symmetrical, dormant volcano with g...

Tongariro

(Encyclopedia)Tongariro tŏngˌgərēˈrō [key], volcano, 6,458 ft (1,968 m) high, on the North Island, New Zealand. Hot springs are on its slopes and a lake is on the summit. It erupted in 2012 after being quiet ...

Iwo Jima

(Encyclopedia)Iwo Jima tō [key], volcanic island, c.8 sq mi (21 sq km), W Pacific, largest and most important of the Volcano Islands. Mt. Suribachi, 546 ft (166 m) high, on the south side of the island, is an exti...

Tristan da Cunha

(Encyclopedia)Tristan da Cunha trĭsˈtăn də ko͞oˈnə [key], group of volcanic islands in the S Atlantic, about midway between S Africa and S America, part of the British Saint Helena overseas territory. The on...

Askja

(Encyclopedia)Askja äsˈkyä [key], volcano, c.4,950 ft (1,510 m) high, E central Iceland; one of the highest in Europe. Its great eruption of 1875 devastated a large area; Askja last erupted in 1961. Askja calder...

Katla

(Encyclopedia)Katla, volcano, 4,961 ft (1,512 m) high, SW Iceland. One of Iceland's most active volcanoes, it is partly buried under the Mýrdalsjökull glacier, which covers its eruptive vents. Katla's most recent...

Huascarán

(Encyclopedia)Huascarán wäskäränˈ [key], extinct volcano, 22,205 ft (6,768 m) high, W central Peru, near Huaráz. The highest mountain in Peru and one of the highest in the Andes, Huascarán and other nearby p...

Diamond Head

(Encyclopedia)Diamond Head, peak, 761 ft (232 m) high, along the rim of an extinct volcano, SE Oahu island, Hawaii. A prominent point in the Honolulu skyline, Diamond Head was designated a national natural landmark...

Cotopaxi

(Encyclopedia)Cotopaxi kōtōpăkˈsē [key], active volcano, 19,347 ft (5,897 m) high, N central Ecuador. A symmetrical snowcapped cone in the Andes, it is one of the highest volcanoes in the world. It is continuo...