sewers sewers

Jesse Hernandez, shown in a handout photo from the Los Angeles Fire Department, spent more than 12 hours in the city's sewer pipes. Hernandez family/LAFD hide caption

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Hernandez family/LAFD

The 130-ton fatberg formed underneath London's Whitechapel area and is said to be among the largest on record. Thames Water says the "rock-solid" mass is composed of cooking fat and wet wipes. AP hide caption

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