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Amchitka

(Encyclopedia)Amchitka ămchĭtˈkə [key], island, 40 mi (64 km) long, in the Rat group of the Aleutian Islands, W Alaska. It was a site in 1965 and 1971 for the underground detonation of nuclear devices, its smal...

Saint Elias Mountains

(Encyclopedia)Saint Elias Mountains, section of the Coast Ranges, SW Yukon, Canada, and SE Alaska, rising to 19,551 ft (5,959 m) at Mt. Logan, Canada's highest peak. Kluane National Park is there. ...

Post, Wiley

(Encyclopedia)Post, Wiley, 1899–1935, American aviator, b. Grand Plain, Tex. He won fame in 1931 when he and Harold Gatty flew around the northern part of the earth in 8 days 15 hr 51 min. In 1933 he made a secon...

permafrost

(Encyclopedia)permafrost, permanently frozen soil, subsoil, or other deposit, characteristic of arctic and some subarctic regions; similar conditions are also found at very high altitudes in mountain ranges. In 196...

Arctic, the

(Encyclopedia)CE5 Arctic, the northernmost area of the earth, centered on the North Pole. The arctic regions are not coextensive with the area enclosed by the Arctic Circle (lat. 66°30′N) but are usually defi...

Chukchi Sea

(Encyclopedia)Chukchi Sea chəkˈchē [key], part of the Arctic Ocean N of the Bering Strait, between Siberia and Alaska, Wrangell Island lies to the west and the Beaufort Sea lies to the east. The sea has an appro...

Hubbard Glacier

(Encyclopedia)Hubbard Glacier, SE Alaska, largest tidewater glacier in North America, on Disenchantment Bay at head of Yakutat Bay, at the northern end of the Alaskan panhandle. Extending 76 mi (122 km) from Mt. Lo...

Porcupine, river, Canada

(Encyclopedia)Porcupine pôrˈkyəpīnˌ [key], river, 448 mi (721 km) long, rising in the Ogilvie Mts., NW Yukon, Canada. It flows in a great arc NE through the Eagle Plain, then W into Alaska and to the Yukon Riv...

White Pass

(Encyclopedia)White Pass, 2,888 ft (880 m) high, in the Coast Mts., on the Alaska–British Columbia border, NE of Skagway. A hazardous trail through the pass was made (1897) by prospectors going to the Klondike, a...

Trans-Canada Highway

(Encyclopedia)Trans-Canada Highway, c.4,800 mi (7,700 km) long, S Canada; dedicated 1962; completed 1970. The world's longest national highway, it traverses North America from St. John's, N.L., to Victoria, British...