Firefighters have been working around the clock after straw stacks caught fire for the second time within a month.
Fire crews from Norwich, Sprowston and Earlham were sent to tackle the blaze in Horsford, which started at about 9.30pm last night.
The fire was still smouldering this morning and Drayton Lane at Horsford was closed to traffic until midday.
Firefighters left the straw to burn out and returned to base just after 9am today.
It is the second time in four weeks that straw in the area has caught on fire.
As reported last month, the busy road was closed for more than 24 hours when a similar incident took place on November 15.
Last time, the two stacks of straw were said to weigh about 500 tonnes and worth about �30,000.
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