It is located in the Appalachian Mountains near Duffield in Scott County , Virginia .
Natural Tunnel State Park is a Virginia state park , centered on the Natural Tunnel , a massive naturally formed cave that is so large it is used as a railroad tunnel .
Natural Tunnel State Park is located in the Appalachian Mountains near Duffield in Scott County , Virginia .
Natural Tunnel State Park is a Virginia state park , centered on the Natural Tunnel , a massive naturally formed cave that is so large it is used as a railroad tunnel .