Utility Company Films Something Terrifying in UK Sewer System (Video)

We'd like to think that the only thing lurking in the sewer is, well, sewage. Unfortunately, it looks like we may be 'in the dark' as to which other things may be calling our sewer system home. In a routine survey, the UK's largest water company captured something startling on film. Take a peak at the videos below if you're brave!

But wait, there's more!

What the heck?! 

What do you think is really happening in the sewers? Let us know in the comment section below, and make sure to share with your friends!

Author: Nate Morgan