A fireball shot into the sky from a blazing agricultural building in Three Holes over the weekend.
Five crews of firefighters spent nearly three hours tackling the flames within a tin building in Flint House Road from 8pm on Sunday.
Watch manager Kim Scotney said the building contained four tractors, gardening machinery, UPVC windows along with gas cylinders and a steel drum of oil.
Mr Scotney said: “A fire ball was 60ft high after a the lid blow off the oil drum.
“We could see the smoke from the fire as we left Downham station. It was quite an intense fire.”
Crews from Downham, Wisbech, Littleport, Fakenham and Swaffham attended.
As there was no threat to life, firefighters tackled the flames from a 50 metre cordon.
The blaze is believed to have been sparked by embers from a bonfire hitting a wood pile and spreading to the building.
Crews returned in the morning to damp down the scene the following morning.
Mr Scotney is now putting out a warning about bonfires.
He said: “It was very windy on Sunday and it is very dry at the moment.
“I would ask people to be careful when starting a bonfire.”