You can go through the Lyttelton Road Tunnel on foot, by bike, or skateboard on Sunday 31 August, from 9.30am to 12.30pm. At the other end of the tunnel, there will be a market day in Lyttelton. This occasion celebrates 50 years of the Tunnel and the opening of the new tunnel control building.
Cecil Malthus’ letters and telegrams tell his story of the First World War.
You can follow him now on Twitter at @malthus_letters. He writes to My own dear Hazel from April 1914 to his discharge in April 1917.