More than 200 rail passengers were stranded after a Highland-bound sleeper train hit "ballast" on the track.
The accident happened at about 0315 GMT and affected the London to Inverness service, which left Euston at 2002 GMT.
About 240 people were on board. Passenger Russell Sharp, said: "It was a miracle it was not derailed."
The train was moved to Carstairs station at 0940 GMT. First ScotRail said buses were taking passengers to Aberdeen, Inverness and Fort William.
The incident happened at Beattock Summit, south of Carstairs.
http://news.bbc.co.uk/1/hi/scotland/glasgow_and_west/7159038.stm
The accident happened at about 0315 GMT and affected the London to Inverness service, which left Euston at 2002 GMT.
About 240 people were on board. Passenger Russell Sharp, said: "It was a miracle it was not derailed."
The train was moved to Carstairs station at 0940 GMT. First ScotRail said buses were taking passengers to Aberdeen, Inverness and Fort William.
The incident happened at Beattock Summit, south of Carstairs.
http://news.bbc.co.uk/1/hi/scotland/glasgow_and_west/7159038.stm