The labyrinthine depths In which we think about secret tunnels and the literature surrounding them Published at 10:39 pm on September 17th, 2007 Filed under: Artistic, Geekery, Trains. Keyword noise: disused, disused underground stations, Doctor Who, Down Street, Jeremy Dyson, labyrinth, literature, London, London Underground, Neverwhere, Paris, Paris Metro, Post Office Railway, secret tunnels, underground.