The route of the new Northern line extension will be illuminated above ground with a 'daisy chain' of high-density light beams, for two nights this October.
Line of Light — happening on the evenings of 29 and 30 October — follows the two-mile London Underground line between Kennington and Battersea Power Station, shooting Bat-Signal-esque beams up into the night skies.
Selected buildings along the way will also be illuminated by moving projections "inspired by themes of connectivity and togetherness" (not entirely sure what that means, but if the mock-ups are anything to go by, they should be pretty enough).
Australian artists Projection Teknik are behind the light show. Meanwhile, an 'audio tapestry' of music, voices and atmosphere of the neighbourhoods directly above the extension tunnels has been recorded, and will be available to download as short podcasts, to listen to while taking in the light show.
Line of Light, 29 and 30 October from 6.30pm-10pm. Free to watch. There are also two hubs at New Union Square, and near Nine Elms station — where free performances take place from 4pm to 9pm each day.