The Cumberland Gap train tunnel - difficult to find a more scary tunnel! (youtube.com) ... You would never drive a train through a tunnel if you didn't know whether the loading profile was within the limits. ... Thus it's not uncommon for trains to exit the tunnel with alarms going off because at least one locomotive in the consist is overheating.
About the Cumberland Gap Tunnel . The Cumberland Gap Tunnel opened to highway traffic on October 18, 1996. The tunnels are located in the Cumberland Mountains of the Appalachian Range, where the states of Kentucky, Tennessee and Virginia converge.
This is the last tunnel on the line coming out of Knoxville. As I’ve mentioned before, the Knoxville Cumberland Gap Louisville railroad company blasted out this tunnel in 1888-1889, with a grade going up to the more or less center of the tunnel on both sides, so the cross-section of the mountain would reveal a tunnel that looks like an inverted “V”.
Recall, the Knoxville Cumberland Gap Louisville railroad company blasted through Cumberland Gap with a tunnel that was finished in 1889. In the meantime, in 1890, Middlesboro burned to the ground, but quickly recovered and needed places for its people to go. Middlesboro was going to be the Birmingham AL of Kentucky, if that makes any sense.
Interesting fact, at the Cumberland Gap Tunnel all trucks with "hazmat" materials are escorted through the tunnel and required to pull over before going into the tunnel. Carmen Shields is with Vincent Maggard at Cumberland Gap Tunnel .
Southern Railway Cumberland Gap Tunnel. Posted May 3, 2010, by CMountains (cumberlandmountains [at] yahoo [dot] com) The picture is of the tunnel in Cumberland Gap, Tn (right next to the Iron Furnace parking area), but it's in the Cumberland Mountains not under Clinch Mountain. Clinch Mountain is a few miles southeast of this picture.
"The Cumberland Gap Tunnel is a mountain tunnel that carries under Cumberland Gap between Tennessee and Kentucky" "The Cumberland Gap Tunnel. This is the Tennessee portal where you can see the viaduct approach to the tunnel. Photo by H.B. Elkins."
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