This is the Elkhorn City portal of the Stateline Tunnel, which crosses under the Kentucky-Virginia State Line at The Breaks Interstate Park.  It’s 1,523 feet long and that’s a locomotive light there in the tunnel.  It was a pusher locomotive for a train that had just passed by.

Here’s the surprise.  A little over halfway through the tunnel, we found this: a side portal opening out into The Breaks.  The picture doesn’t show it, but it has a definite cut shape. I’ve read that it was opened as the result of a rock fault.