Rockland County was inhabited by the Munsee band of Lenape Native Americans, who were speakers of the Algonquian languages. Monsey Glen, a Native American encampment, is located west of the intersection of State Route 59 and State Route 306. Numerous artifacts have been found there and some rock shelters are still visible. The Monsey railroad station, which received its name from an alternate spelling of the Munsee Lenape, was built when the New York & Erie Railroad passed through the glen in 1841.