A bus-sized, 15-ton mass made up of grease and wet wipes was recently discovered in the sewers under London. The astonishing find has been dubbed "fatberg."
A team of sewage workers with the Thames Water company reportedly found the giant mass with little time to spare. A spokesperson with the company told NBC News that the city "could have had sewage popping out of manholes all over London."
Local residents apparently complained about being unable to flush their toilets, causing officials to investigate the issue.
"We've never seen a single, congealed lump of lard this big clogging our sewers before," Thames Water supervisor Gordon Hallwood said.
"Before it was removed, it had reduced the sewer's capacity to just five percent of its regular level, and the damage it caused will take six weeks to repair," TheVerge.com reports.
Thames Water has recently started converting the giant fatty deposits into electricity, the report adds.