Watkins Glen, resort village (1990 pop. 2,207), seat of Schuyler co., W central N.Y., in the Finger Lakes region, at the southern end of Seneca Lake; inc. 1842. It is in a grape and wine area, and there are salt mines nearby. Its setting of cliffs, waterfalls, and unusual rock formations made by an interwinding stream attracts many visitors. The resort hotel there is famed for its mineral spring water. Automobile races have been held there since 1948. From 1961 to 1980 a Formula 1 Grand Prix race was held annually; annual NASCAR and IndyCar races are currently held. Watkins Glen State Park adjoins the village.

Tetley, Glen (Glenford Andrew Tetley, Jr.), 1926-2006, American dancer and choreographer, b. Cleveland. He studied in New York City with Hanya Holm and trained with Martha Graham, subsequently dancing (1958-59) with her company. Also a member of the American Ballet Theatre, he later had his own modern-dance troupe, which disbanded in 1969; danced (1962-65) with the Netherlands Dance Theater, briefly becoming (1969) its co-director; and directed (1974-76) the Stuttgart Ballet. His influential choreography is marked by a fusion of ballet and modern-dance elements. Tetley made dances for many companies in the United States and in Europe, where he introduced American modern-dance approaches and techniques and where his work was particularly popular. His dances include Voluntaries (1973), his signature piece; Pierrot Lunaire (1962); Greening (1975); and Lux in Tenebris (1999).

Stanley, Carter Glen: see under Stanley, Ralph Edmond.

Great Glen or Glen More, valley, 60 mi (97 km) long, Highland, N central Scotland, extending from Moray Firth SW to Loch Linnhe. It was formed by a fault in the earth's surface. Loch Ness, Loch Oich, and Loch Lochy, glacial lakes located on the fault line, extend hundreds of feet below sea level. The Caledonian Canal traverses Great Glen.

Glen Roy, valley, Highland, W Scotland, E of Loch Lochy. The Parallel Roads, three terraces on each side of the valley at corresponding heights, are believed to mark receding levels of a lake that once filled the valley.

Glen Rock, borough (1990 pop. 10,883), Bergen co., NE N.J., a residential suburb of New York City; settled c.1710, inc. 1896. George Washington's army used the area for camping grounds during the Revolutionary War.

Glen More: see Great Glen, valley, Scotland.

Glen Ellyn, village (1990 pop. 24,944), Du Page co., NE Ill., a residential suburb of Chicago; inc. 1892. Points of interest include Stacy Tavern, a 19th-century stagecoach stop on the Chicago-Galena route; a wildlife sanctuary; and an arboretum.

Glen Cove, city (1990 pop. 24,149), Nassau co., SE N.Y., on the north shore of Long Island, at the entrance to Hempstead Harbor; settled 1668, inc. as a city 1918. It is chiefly residential but has high-technology equipment and chemical industries, as well as the Webb Institute of Naval Architecture and a historic ship, the Regina Maris.

Glen Canyon Dam, 710 ft (216 m) high, 1,560 ft (475 m) long, NE Ariz., on the Colorado River. The key unit of the U.S. Bureau of Reclamation's Colorado River storage project, it is one of the world's largest concrete dams (larger in bulk, though not in height, than Hoover Dam). The dam, completed in 1963 and dedicated in 1966 after completion of its power-generation facilities, regulates the flow of the upper Colorado and its tributaries and produces hydroelectricity (since 1964). The dam sharply reduced the seasonal flow of the Colorado downstream, dramatically altering the ecology of the river in the Grand Canyon. Changes in water releases have been experimented with in an attempt to ameliorate the effects of the dam.

Lake Powell, formed by the dam, extends 186 mi (299 km) upstream into S Utah. The lake was named after the American explorer John W. Powell, who mapped and named the canyon in 1870. This lake is the nucleus of the Glen Canyon National Recreation Area (see National Parks and Monuments, table). Downstream is the Glen Canyon Bridge, 1,271 ft (387 m) long and 700 ft (213 m) high, one of the world's longest and highest steel-arch bridges.

(born Feb. 3, 1926, Cleveland, Ohio, U.S.) American dancer, choreographer, and ballet director. He trained in modern dance with Hanya Holm and Martha Graham. Between 1946 and 1962 he danced in Broadway musical productions as well as with dance companies such as the American Ballet Theatre. He became a choreographer in 1962, forming his own company and creating Pierrot Lunaire. Subsequently he staged works with most of the major dance companies throughout the world. Tetley's work helped to bring about a synthesis of modern dance and classical ballet. His creative staging and daring, often sexual, subject matter were sometimes controversial, but he was praised for the passion and strong physicality of his work.

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