Natural Tunnel State Park
.jpg)
The Natural Tunnel, still in use as a railroad tunnel
|
|
| Overview | |
|---|---|
| Location | Natural Tunnel State Park, Scott County, Virginia, United States |
| Coordinates | 36°42′11″N 82°44′35″W / 36.703°N 82.743°WCoordinates: 36°42′11″N 82°44′35″W / 36.703°N 82.743°W |
| Operation | |
| Constructed | 1893 |
| Opened | 1894 |
| Owner | Commonwealth of Virginia |
| Operator | Norfolk Southern Railway |
| Traffic | Coal Haulage |
| Character | Naturally formed limestone cave converted to a railroad tunnel |
| Technical | |
| Length | 838 feet (255 m) |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Electrified | No |
| Tunnel clearance | Portals: 50 feet (15 m) Max: 80 feet (24 m) |
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. It is located in the Appalachian Mountains near Duffield in Scott County, Virginia.
The Natural tunnel, which is up to 200 feet (61 m) wide and 80 feet (24 m) high, began to form more than a million years ago when groundwater bearing carbonic acid percolated through crevices and slowly dissolved limestone and dolomite bedrock. A small river, which is now called Stock Creek, was diverted underground and it continued to erode the tunnel over many millennia.
The walls of the tunnel show evidence of prehistoric life. Many fossils have been found in the creek bed and in the tunnel walls.
The tunnel passes through Purchase Ridge, which is made of the Ordovician Chepultepec Limestone and is near the axis of the Purchase Ridge syncline. It lies between the Clinchport Thrust Fault and the Hunter Valley Thrust Fault, on the Hunter Valley Thrust Sheet. The tunnel itself began its formation in the .
It is known that a Cherokee maiden and a Shawnee warrior who had been forbidden to marry by their respective tribes, jumped to their deaths from the highest pinnacle above the Natural Tunnel. The place is now known as Lover's Leap.
Although Natural Tunnel State Park was created in 1967 and opened to the public in 1971, the natural tunnel has been a Virginian tourist attraction for more than a century; Daniel Boone is believed to have been the first European to see it in the 18th century. The 41st United States Secretary of State William Jennings Bryan dubbed it the "Eighth Wonder of the World".
...
Wikipedia