In 1890, the Louisville & Nashville railway (L&N) pushed two tunnels through outcroppings of Stone Mountain between Appalachia and Big Stone Gap while creating its Cumberland Valley Division. This one, closest to Appalachia at 36.895712, -82.787822, is Bee Rock.

This is the view from the Appalachia side. The tracks are still in place, but they haven’t seen a train since around 1986. Bee Rock, at 47′ 7″ in length, enjoyed a brief fame as the “Shortest Railroad Tunnel in Use in the United States”, according to Ripley’s Believe it or Not. Soon (oops!), someone noticed that there was a tunnel a foot or so shorter over near Gallatin TN and that was that.
This is looking through the tunnel toward Callahan’s Nose tunnel (about 4,000′ ahead), which we’ll come to later (interesting tunnel, that).

The plans are, I believe, to turn this old railbed from Appalachia to Big Stone Gap into a trail for walking and biking. I hope so. I’ve walked it a couple of times. It’s very enjoyable, but, then, I’m easy. I’ve walked a lot worse rail lines, for sure.