@tris There's an Emett cartoon in his typical sinister spindly style showing the inside of a cavernous Tube station. One one platform a train is running through, INNER CIRCLE LINE, a demonic figure in the cab, sparks flying from the wheels. "To be honest, sir, we don't know quite _where_ that one goes."
@tris Most scientists insist that dark rail exists, we just can't see the train cars because they never turn their headlights on. But some fringe theorists think we just don't fully understand rush hour schedule distortion