If you thought the sewers were only populated by four pizza-loving, crime-fighting turtles, think again. Sewer workers spill the 15 craziest things they have found underground and some of them are shocking.
No one knows how it got down there.

The people in a town in Fuji discovered a cow in a manhole after they heard mooing sounds. No one knows how it got down there. source
“Strangest thing I have come across has to be a…”

"Strangest thing I have come across has to be a homeless campsite. The sight itself wasn't too bad, just a few candles, some random papers, a cushion from a lawn chair, but seeing it scared the crap out of me knowing there could be someone down there with me." source
15 tons of…

In London, 15 tons of fat were discovered blocking the sewer lines in London. It was mainly congealed cooking oil and baby wipes. ?source
“I found a live…”

"I found a live bird in there once. So weird. Blew my mind how it got in there. This was a small 9 inch sewer too!" source
The other half was never found.

In London, half of a Mini Cooper car was spotted in the sewer. The other half of the car was never found. source
But what they discovered was anything but routine.

Sewer workers in Surrey sent a camera down into the sewer to perform a routine check. But what they discovered was anything but routine. A sheep was just roaming around the sewer. source
“The strangest thing was in London…”

"The strangest thing was in London where I saw some robot monitoring thing crawling slowly up the sewer, it was wierd as f***, like WALL-E." source
Sewer workers found four…

In Essex, UK, sewer workers found four watches: One Omega, two Rolexes and a Franck Muller timepiece. Together they are worth over $93,000. source
“And it was angry.”

"I found a really big snapping turtle. And it was angry. I tried lifting it out by creating a seal with a vacuum, but it would always claw at the manhole, pull itself loose, and drop back in. I ended up sucking most of the water out and managed to drop it into a bucket. I hauled it out and dumped it in the nearby wooded area that it presumably came from." source
Water treatment workers in Japan found…

In 2009, water treatment workers in Japan found about $56,000 worth of gold coins in the debris. source
” I found half of a…”

“They never see sunlight.”

"There are a ton of roaches. They're white too since they never see any sunlight. Big cockroaches are not very surprising, but white cockroaches are kinda weird." source
A routine check discovered a…

In 2006, a routine check discovered a 600-pound alligator in the sewer lines in Texas. Authorities think it was there since it was a baby. source
Nobody can figure out what it belonged to.

A jawbone was found in the sewers of Edmonton, Canada. Nobody can figure out what it belonged to. It doesn't belong to a human or any known animal. source
Back To The 90s

A fax machine was found among debris in Scotland. source