In May 2016 I was lucky enough to get to take a tour through the disused/non-public tunnels underneath Euston Station in London. The whole experience was fantastic, but a particular highlight was getting to stand in a ventilation shaft directly above the Victoria Line platforms, where this video was taken. Travelling the underground, it’s easy to be unaware of the network of tunnels around the ones you’re in, bringing air and electricity from the surface.