A 10-ton 'fatberg' made up of solidified fat, wet wipes, sanitary items and household waste broke a sewer pipe this week under the West London neighborhood of Chelsea.
The congealed lump had to be physically removed from the sewer system and caused some $600,000 in damage, according to the Guardian newspaper.
While the 10-ton fatberg was gross, it wasn't as massive as the 15-ton fatberg (shown here) that clogged London's sewer in 2013.
Fatbergs demonstrate that as gross as we already know sewers to be, given that they're massive, man-made rivers of human waste, not everything that goes down the drain necessarily gets flushed away. Explore other shocking discoveries that didn't quite clear the pipes.