A giant "fatberg" the size of 25 elephants has finally been cleared from the sewers of Liverpool.
The 200 tonne mass - made up of congealed fat and other waste material like wet wipes - had been blocking a 250 metre stretch of the city's central sewer, causing flooding at businesses around Bankhall Lance.
A new fat-busting technique "that literally ate it away from the inside out" had to be designed to clear the blockage.
So, how do you get rid of a huge, solid ball of fat?
Engineers drilled a hole through the centre of the fatberg
They fed a steel rope line through the hole, turning it into a zip-wire
They ran a specially adapted jet machine along the rope, blasting the fatberg from the inside
The team - made up of United Utilities and Sapphire Utility Solutions - said this new method was "a success story", clearing the blockage in half the time it would have taken to replace the sewer system.