Rail accident investigators have carried out a preliminary examination after a freight train struck a boulder and derailed in Scotland during torrential rain.
Freight train 6S45 derailed between Corrour and Tulloch station on the West Highland line just after 7pm on June 28.
The locomotive ploughed down the slope and came to rest away from the railway on a natural ledge in the slope.
The Rail Accident Investigation Branch (RAIB) believes that the boulder is likely to have become dislodged during a landslide.
The freight train comprised of a diesel-electric locomotive, three empty wagons and 21 wagons carrying aluminium powder from the North Blyth Alcan site to Fort William.
All the wheels of the locomotive and the first five wagons of the train derailed towards Loch Treig during the accident. The leading three wagons came to rest on their side parallel to the railway line.
There was some track damage and some damage to the vehicles involved.
The driver of the locomotive was uninjured.
