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Watchung Mountains

Watchung Mountains, two long low ridges of volcanic origin, from 400 to 500 ft (122–152 m) high, N central N.J. They curve c.40 mi (60 km) between Paterson and Somerville. Basalt is quarried there. The Watchungs have been the scene of extensive suburban development since the 1970s.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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