Natural Tunnel State Park is located in the Appalachian Mountains in Scott County, VA. The park's focal point is its namesake Natural Tunnel, which is a large natural cave that is used as a railroad tunnel. The tunnel is up to 90 feet high and 200 feet wide and was formed when groundwater dissolved limestone and dolomite bedrock. Fossils have been found in the tunnel walls and surrounding area.
The park offers many family activities, including a 500 foot boardwalk and observation deck. There is hiking and mountain biking among the seven trails. The trails lead to various destinations of interest, including the tunnel floor, Tunnel Hill, Gorge Ridge and Lover’s Leap. There is a complex with a large swimming pool, a bathhouse, and a snack bar. Overnight visitors can stay in one of the two campgrounds, which have electric/hot water camp sites.