(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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In the Finger Lakes Region of New York State, the southern ends of Seneca and Cayuga in particular are etched with glens, although in this region the term "glen" refers most frequently to a narrow gorge, as opposed to a wider valley. The steep hills surrounding these lakes are filled with loose shale from glacial moraines. This material has eroded over the past 10,000 years to produce beautiful rocky glens (e.g., Watkins Glen and Treman State Parks) and waterfalls as rainfall has descended toward the lakes below.
The designation "glen" also occurs often in place names such as Great Glen in Scotland, Glenrothes in Fife, Scotland, Glendalough in Ireland, Glengowrie in Australia, Glen Norman in Canada and Glen Waverley in Australia.