This fatberg in London took a team of workers from Thames Water four days to clear.
The mixture of congealed fat, wet wipes and other litter was washed into drains or flushed down toilets.
Thames Water says the fatberg formed under an 80-metre stretch of Shepherd’s Bush Road, as long as commercial plane.
Workers finished removing the dirt last Friday to stop local homes and businesses flooding.
They used high-powered water jets to break up the congealed mass so that wastewater could start to pass through the sewer again.
Dave Dennis, Thames Water sewer operations manager, said: “We have 108,000 km (62,000 miles) of sewers, and that’s a lot of pipe to keep clear.
For more read the whole article here: https://www.bbc.co.uk/newsbeat/29015390