Hook Mountain State Park is a 676-acre (2.74 km2) undeveloped state park located in Rockland County, New York.[2] The park includes a portion of the Hudson River Palisades on the western shore of the Hudson River,[3] and is part of the Palisades Interstate Park system.[4] Hook Mountain State Park is functionally part of a continuous complex of parks that also includes Rockland Lake State Park, Nyack Beach State Park, and Haverstraw Beach State Park.[3]