Harriman State Park is a large preservation of land found in the lower Hudson River Valley, spanning Rockland and Orange Counties. It's the second-largest state park in the state of New York, stretching for more than 47,000 acres. The park is often associated with its northeastern neighbor, Bear Mountain State Park, the Appalachian Trail winding through each. The park features dozens of lakes, hiking trails, and recreation activities and destinations, and is popular with many outdoor enthusiasts.