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Near Shady Valley in Johnson County, Tennessee — The American South (East South Central)
 

Backbone Rock

 
 
Backbone Rock Marker image. Click for full size.
Photographed by Tom Bosse, September 4, 2022
1. Backbone Rock Marker
Inscription. You are looking at Backbone Rock, known locally as the "Shortest Tunnel in the World".

Around 1908, the Beaver Dam Railway Company blasted and drilled the tunnel to provide railroad access from Damascus into Shady Valley's rich manganese and iron ores and timber. Within the next twenty years, the area's privately-owned timber had been cut over twice and ravaged by a devastating fire. Minerals were virtually mined out using available techniques.

With an eye toward conservation of natural resources, in 1911 Congress enabled the federal government to acquire tracts of land for a newly-emerging eastern national forest system. Backbone Rock and 20,000 acres surrounding it were purchased to form part of Tennessee's national forest lands.

Beaver Dam's railroad tracks were taken up in 1924 and the route was opened for automobiles. The tunnel was widened in 1930 for two lane traffic.

Automobile access to Backbone Rock provided opportunities for recreation use. Three of Roosevelt's "New Deal" public works programs in the 1930s helped develop the recreation areas. Still in use from that era are two covered picnic shelters and rustic flights of steps on nearby trails. A second round of improvements, including construction of the nearby campground were made in the 1960s under the Accelerated Public Works
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The USDA Forest Service has managed the public lands at Backbone Rock since the nineteen-teens. Enjoy picnicking, fishing, hiking, sightseeing, and camping here at the "Shortest Tunnel in the World".

(caption)
Around the turn of the 20th century, the Virginia-Carolina Railway expanded from Abingdon's Norfolk and Western railhub through Damascus and south to Sutherland near the Virginia-Tennessee state line. By 1901,Beaver Dam Railroad Company extended the line south 3 1/2 miles to the rail town of Crandull . Within eight years, by 1901, another six miles of standard gauge line was completed all the way into Shady Valley by a company called Crandull and Shady Valley Railway.

These rail lines, built largely by investments from private lumber companies, provided an important public transportation link. Shady Valley was no longer isolated by the surrounding Holston and Iron Mountain ranges. For fifteen years, mail service and passengers, as well as the area's harvested natural resources, travelled between Shady Valley and the busy manufacturing town of Damascus across railroad lines that once paralleled Beaverdam Creek.

Many old rail lines have been converted to modern uses. to arrive here at Backbone Rock, you travelled along Beave Dam Railroad's route. And between Abingdon and White Top you can hike, bicycle,
Backbone Rock Marker image. Click for full size.
Photographed by Tom Bosse, September 4, 2022
2. Backbone Rock Marker
Backbone Rock, "The Shortest Tunnel in the World", in the background.
or ride a horse along the Virginia-Carolina Railway bed, now known as the "Virginia Creeper Trail".

 
Erected by Forest Service, U.S. Department of Agriculture.
 
Topics. This historical marker is listed in these topic lists: Industry & CommerceParks & Recreational AreasRailroads & Streetcars. A significant historical year for this entry is 1908.
 
Location. 36° 35.617′ N, 81° 48.9′ W. Marker is near Shady Valley, Tennessee, in Johnson County. It is on Tennessee Route 133 one mile south of Iron Mountain Road, on the right when traveling north. Touch for map. Marker is in this post office area: Shady Valley TN 37688, United States of America. Touch for directions.

Regionally, this marker is in East Tennessee. It is also in the American South, specifically in the Upper South, in Appalachia, and specifically in Southern Appalachia. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once the original Cherokee Nation, the territory of the Mississippian Culture, one of the Confederate States of America, the State of Franklin, and the Antebellum South.

Other nearby markers. At least 8 other markers are within 4 miles of this marker, measured as the crow flies: Electricity Comes to Damascus (approx. 3.1 miles away in Virginia); Damascus (approx. 3.1 miles away in Virginia); Founders of Damascus (approx. 3.1 miles away in Virginia); Virginia Creeper Trail (approx. 3.1 miles away in Virginia); Laurel Avenue, The Main Street of Damascus (approx. 3.2 miles away in Virginia); Damascus Presbyterian Church (approx. 3.2 miles away in Virginia); Churches of Damascus (approx. 3.2 miles away in Virginia); Transition from Rail to Trail (approx. 3.2 miles away in Virginia).
 
Backbone Rock Facing North image. Click for full size.
Photographed by Tom Bosse, September 4, 2022
3. Backbone Rock Facing North
Backbone Rock image. Click for full size.
Photographed by Tom Bosse, September 4, 2022
4. Backbone Rock
Backbone Rock Tunnel Sign image. Click for full size.
Photographed by Tom Bosse, September 4, 2022
5. Backbone Rock Tunnel Sign
Beaverdam Creek image. Click for full size.
Photographed by Tom Bosse, September 4, 2022
6. Beaverdam Creek
 
 
Credits. This page was last revised on November 10, 2024. It was originally submitted on November 23, 2022, by Tom Bosse of Jefferson City, Tennessee. This page has been viewed 1,363 times since then and 80 times this year. Photos:   1, 2, 3, 4, 5, 6. submitted on November 23, 2022, by Tom Bosse of Jefferson City, Tennessee. • Bernard Fisher was the editor who published this page.
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Jun. 14, 2026