Five people were injured when a miniature steam train hit a tractor and derailed.
Kent Fire and Rescue Service were called to reports of a collision between the train and a farm tractor on a level crossing on Hythe Road, in Dymchurch, Kent, at 2.40pm on Saturday.
Five people, including the train driver, were treated at the scene by paramedics for minor injuries, out of the approximately 50 people on board.
Crews then secured the locomotive's boiler which was "thought to be at risk of exploding", the fire service said.
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The locomotive and first carriage were derailed, while the remaining 12 carriages were unaffected.
The Romney Hythe and Dymchurch line has been closed to all trains, the fire service said.