BBC News
Published
image captionStaff managed to remove some icicles by hand
Network Rail has used a special train to remove dangerous 5ft (1.5m) icicles dangling from the roof of a tunnel on the Settle to Carlisle line.
The operator said some icicles were also cleared by hand by staff during the freezing weather conditions.
The icicles can fall and cause delays to passing trains.
Infrastructure director Chris Pye said: "Our extreme weather action teams prepare for when winter bites so we're ready to keep the railway running."
image copyrightNETWORK RAIL
image captionThe icicles can disrupt trains if they fall