Fire crews were called out on Sunday after part of a 1,000-ton muck heap on farming land in north Suffolk was reported to be on fire.
Crews from Ixworth and Bury St Edmunds were sent to the scene, in North Common, Hepworth, at about 5.55pm.
The heap had caught fire and burnt out, but there were still hot spots so more crews from Bury St Edmunds were called for to attend the scene.
The farmer responsible for the land helped firefighters break apart the heap so they could fully extinguish it, using one hose reel.
Nearly four hours later, the firefighters returned to their respective bases at about 9.30pm.