Fire crews remain at the scene of a stack fire in Mepal involving 2,000 tonnes of bailed straw which they were first called to at 9.45pm last night.
Firefighters are carrying out a watching brief to ensure that the fire is burning out and that it does not spread to any other part of the farm.
A Cambs Fire spokesman said: "We can't just flood it with water. So the firefighters are surrounding it and letting it burn out."
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