Marsh-Billings-Rockefeller National Historical Park Vermont’s only National Park, Marsh-Billings-Rockefeller National Historical Park tells the evolving story of the conservation movement. The park’s 20 miles of trails and carriage roads are open dawn till dusk for hiking and equestrian use. Difficulty levels range from easy to moderate; hiking trails have surfaces that can be covered in rocks and roots, are often narrow enough to require single-file hiking, and have difficulties ranging from easy to moderately strenuous, whilecarriage roads are perfect for leisurely walks with friends and family because they are wide and smooth. The most popular trail is The Pogue and Mount Tom Trail, which is 4.2 miles long with an elevation gain of 649 feet. Highlights include walking under centuries-old hemlocks and beech trees to visit the Pogue, a 14-acre pond, and Mount Tom’s South Peak, where you can enjoy a bird’s-eye view of Woodstock. During the winter months, some of the trails are groomed for cross-country skiing.