Rockland

Rockland, county, southeastern New York state, U.S., consisting of a hilly region bordered by the Hudson River to the east and New Jersey to the southwest. Sandstone bluffs known as the Palisades border the Hudson where it narrows below the Tappan Zee area of the river. Among the other waterways are the Mahwah River, Rockland and DeForest lakes, and Lake Sebago. Harriman State Park, located in the northwestern section of the county, is the second...