Firefighters were called to a waste disposal site after it mysteriously set alight.
Six fire crews spent two and a half hours battling the blaze, on Dawson Lane, Whittle-le-Woods, Chorley, at 8.56pm on Monday.
The large blaze broke out in a pile of waste in a one-storey building, on Clayton Hall Landfill Site.
This is situated on the Preston Road End of Dawson Lane.
The cause of the fire is not yet known, but it is not thought to be deliberate.
Lighting equipment and breathing apparatus was used, to help firefighters tackle the fire.
A Lancashire Fire and Rescue spokesman, said: “The building on fire was a storage building for recyclable materials, from plastics through to metals.
“It is not thought that it is arson.
“We don’t know how it started, but we are currently looking into itn
“At the time of the fire, it was dark, so firefighters had to get lighting equipment set up.
“They used breathing apparatus, to go into the burning building, as there was a lot of smoke swirling around.”
Two thermal imaging cameras and two hose reels were also used by firefighters.
They used large loading shovels to remove waste from the building and were on site until approximately midnight.
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