Arsonists set fire to car tyres and rubbish in East Cambridgesire.
The fire in the open happened on Pools Road near Witchford Friday June 7.
Crews from Ely and Cottenham were called at about 5.26pm.
Firefighters arrived to find car tyres and refuse on fire.
The crews used a hose reel and small gear to extinguish the fire and returned to their stations by 7.25pm.
The cause of the fire is believed to be deliberate.
Anyone with information should contact police by visiting www.cambs.police.uk to submit an online report or call Crimestoppers on 0800 555111.
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