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Three Gorges Dam

(Encyclopedia)Three Gorges Dam, 607 ft (185 m) high and 7,575 ft (2,309 m) long, on the Chang (Yangtze) River, central Hubei prov., China, 30 mi (48 km) W of Yichang. The largest concrete structure in the world, th...

Three Holy Children

(Encyclopedia)Three Holy Children: see Three Young Men. ...

Wake Island

(Encyclopedia)Wake Island, atoll with three islets (Wake, Wilkes, and Peale), 3 sq mi (7.8 sq km), central Pacific, between Hawaii and Guam. It is a U.S. military base and scientific research center under the juris...

Howland Island

(Encyclopedia)Howland Island, uninhabited island (.73 sq mi/1.89 sq km), central Pacific near the equator, c.1,620 mi (2610 km) SW of Honolulu. The island was discovered by American traders and was claimed by the U...

Kodiak Island

(Encyclopedia)Kodiak Island kōˈdēăkˌ [key], 5,363 sq mi (13,890 sq km), c.100 mi (160 km) long and 10–60 mi (16–96 km) wide, off S Alaska, separated from the Alaska Peninsula by Shelikof Strait. Alaska's l...

Pitcairn Island

(Encyclopedia)Pitcairn Island, volcanic island (2005 est. pop. 45), 2.5 sq mi (6.5 sq km), South Pacific, SE of Tuamotu Archipelago. Adamstown is the capital and only settlement. The first British Pacific Islands p...

island

(Encyclopedia)island, relatively small body of land surrounded entirely by water. (As the oceans form a continuous mass of water on the earth's surface, all continents are islands in the strict sense of the word.) ...

Hadrian's Wall

(Encyclopedia)Hadrian's Wall, ancient Roman wall, 73.5 mi (118.3 km) long, across the narrow part of the island of Great Britain from Wallsend on the Tyne River to Bowness at the head of Solway Firth. It was mainly...

Rügen

(Encyclopedia)Rügen rüˈgən [key], island (1994 est. pop. 85,000), 358 sq mi (927 sq km), Mecklenburg–West Pomerania, NE Germany, in the Baltic Sea, separated from the mainland by the Strelasund. The chief tow...

Alcatraz

(Encyclopedia)Alcatraz ălˈkətrăzˌ [key] [Sp. Álcatraces=pelicans], rocky island in San Francisco Bay, W Calif, about one mile (1.61 km) north of San Francisco. Alcatraz was first sighted by the Spanish in 177...