Ramapo Mountains

In New York, the mountains serve to divide Orange and Rockland Counties.

The Ramapos are composed of granite, gneiss, and marble, as old as 1.3 billion years.

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You can help Wikipedia by expanding it.This article about a location in Orange County, New York is a stub.

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Ramapo Torne in Harriman State Park , part of the Ramapo Mountains