Firefighters have captured the moment a "firenado", or fire whirl, engulfed a plastics factory in Derbyshire, England.
Officers from the fire services had been tackling the fire since about 1.20am on Tuesday at Ravensbourn Plastics Ltd on Occupation Lane, Swadlincote.
The fire had also spread to a small site building and a number of forklift trucks at the property, Derbyshire Fire and Rescue Service said.
The Derbyshire service was also joined by officers from Leicestershire and Staffordshire to try and prevent the large fire from spreading.
At about 3pm on Tuesday firefighters started damping down the fire, which involved stacked plastic pallets, which were ordinarily used for making plastic crates for supermarkets.
No injuries were reported but a huge black smoke cloud was seen from as far away as Shepshed in Leicestershire and Nottingham city centre.
Derbyshire police have said an investigation into the cause of the fire is under way and are appealing for anyone with information to come forward.
Now firefighters have released footage of the blaze and the mesmerising firenado, which reached a height of more than 50ft.
Leicestershire Fire and Rescue Service, which helped tackle the blaze, shared the video on Facebook, saying: "Whilst we were firefighting at Occupation Lane we witnessed a firenado or a fire whirl .
“It’s created as cool air enters the top of the hot air causing a swirl similar to how a tornado is formed.”
Speaking while crews tackled the fire, the Derbyshire service’s group manager Steve Wells said: “We’ve received lots of calls to our control room this morning, as people in the Swadlincote area have woken to the sight of a large black smoke plume.
“Crews from across Derbyshire, Leicestershire and Staffordshire have been working hard since the early hours of the morning, jointly with partners from the police, Severn Trent Water and the Environment Agency, to bring the fire under control, prevent any further spread and bring the incident to a safe and swift conclusion.
“Whilst the site of the fire is not directly next to any residential properties, we are still advising locals to keep their windows and doors closed until the fire is completely out and the smoke has subsided.” – PA