We walked back up to the corridors of the station and mingled with the public as we made our way to a door into the hidden tunnels. Once we were are lined up down the side of the corridor and ready to move the door was opened and we filed into the first tunnel. As we entered we were given hard hats
Along the tunnel we came to the space over the Northern Line platforms. We squeezed into the spaces and looked for trains below us.
We were out of look on our side of the line. Then we set off back down the tunnels to go to the vertical ventilation shaft.
This shaft goes up above street level until it is the height of Nelson’s Column inside a building.
The steps were those used by James Bond to descend to the bottom of the shaft …
Below ground the shaft uses the same steal plates as the tube tunnels (the dates on the plates are 1972 and 1973 that I could see).
The top of the shaft is open to the elements and slowly nature is adding its own structures to the shaft.
We then backtracked down the tunnels, handed our hats back and re-joined the public corridors.