Police are investigating an incident near Kendal that cancelled a train service, left passengers stranded for up to several hours and caused an estimated several thousand pounds of damage.
Officers of British Transport Police are investigating the incident where a stone was thrown at a train near Kendal, damaging the drivers cab window at 8:35pm on Saturday, June 4.
PC Adam Heslop, investigating, said: "The stone, which we suspect came from a nearby riverbed, smashed the outer skin of the front driver's cab window.
"The train was travelling at 50mph and the stone was just millimetres from smashing through the inner glass which would have hit the driver, causing serious injury.
PC Heslop also said that the train was cancelled as a result, leaving passengers stranded at Windermere and Lancaster from 7pm, with some not getting home until 1am the following day.
The damaged train was the Northern 8:22pm Oxenholme to Windermere service, which was struck by the stone which had been thrown from a nearby bridge.
He added: "Add this to the cost of replacing the window, which is estimated to be around £4,000 due to it being specialist glass, and you get some idea of the consequence of such a stupid and dangerous act."