Old stone walls mark the property perimeter, giving you a sense of enclosure throughout the whole hike. High rocks is a vertical formation popular among climbers. On either side of it, winding trails afford you spectacular views of Tohickon Valley and the creeks below. Class 3 & 4 whitewater rafting is popular in March and November, and numerous rustic cabins are available for rent throughout the park. Almost a hundred species of bird inhabit the park. In winter, hikers can snowshoe through the park for a stunning sight of the hardwood forest.
Rhode Island: Norman Bird Sanctuary
Besides the abundance of bird species (blue jays, snowy egrets, hawks, goldfinches, and peregrine falcons, among many others), the sanctuary is also home to a good population of wild rabbits and foxes. Stop at the check-in center for trail maps before getting started --They will help get through the woods to reach the seaside ledge. The ocean's view is a no-miss.
South Dakota: The Centennial Trail
One of the finest hiking trails in the country, the Centennial Trail twists through the Black Hills trail system for over 100 miles. Day hikes are possible, but to best experience the location you'll have to obtain a backpacker's permit and spend about a week following the tracks.
Vermont: Haystack Mountain
Originally designed as a cross-country skiing link to other areas, the trail may be hard to find, as it's not often marked in many maps. Going up, you get a unique, unobstructed view of mountains (including the Adirondacks to the west) and reservoirs in three different states: Massachusetts, New York, and New Hampshire. Cross the Haystack Ponds for some birdwatching, and after three hours, reach the wooded summit at 1020 ft.
Virginia: Old Rag
Over 100,000 hikers come to Old Rag each year to experience one of the best mountain views of the country. Wild turkeys and black bears walk around at mostly safe distances, and you can run into a few snakes in the hike up. Once you reach the 3291-foot summit, your reward is an incomparable view of Virginia's farm county and the surrounding mountains and ridges. If you need a break, stop at one of the two open shelters (complete with fireplaces and cooking facilities) along the way. Do not attempt if you're not in top shape.