The FREE Line of Light outdoor festival features lights and visual projections from Projection Teknik and will follow the above-ground route of the 3km Northern line extension tunnels each evening on Friday 29 and Saturday 30 October.
Between 6.30pm and 10pm, a daisy-chain of high-density light beams will illuminate the new stations at Battersea Power Station and Nine Elms, and paint the route of the tunnels in the sky to create the Line of Light.