shafts. Restoration involved replacing of track and sleepers before it re-opened to traffic on 19 August 1985. On 28 December 2010, a passenger train travelling from Manchester to Leeds was derailed when it struck ice that had fallen onto the tracks from one of the ventilation shafts. The ice had built up during exceptionally cold weather and fell into the tunnel when it started to thaw. The train was the first to use the tunnel in three days as a result of a temporary break in services around Christmas. It collided with the tunnel wall, but remained upright and no injuries were reported. Sources Bibliography Further reading MacDonald, M. The World From Rough Stones (1975, Random House); a novel set during the building of the Summit Tunnel. External links Rail transport in West Yorkshire Rail transport in Greater Manchester Tunnels in West Yorkshire Tunnels in Greater Manchester Trans-Pennine Railway tunnels Buildings and structures in the Metropolitan Borough of Rochdale Buildings and structures in Calderdale