#1
one of my duties was to go into the underground mines and take coal, dirt, and air samples on a regular basis. often this'd be a little away from other workers.
one place i'd hate going because every time it'd feel and sound like there was someone standing just behind me to my left and whispering in my ear, even when the nearest other person was 30 yards away or so.
probably just weird acoustics but f**k i hated those days.
#2

#3

Our fear of the dark underground is primal. It’s a space without sun, without easy escape, where our senses can betray us. This environment is the perfect stage for the mind to play tricks, turning the drip of water into footsteps or the screech of train wheels into a scream. It's the core fear tapped into by horror films like The Descent, where the true horror isn't just the creatures, but also crushing claustrophobia.
This is a documented phenomenon. The psychological impact of being in these isolated environments, known as the Ganzfeld effect, can cause hallucinations when sensory input is monotonous. So, when a tunnel worker hears a whisper in an empty passage, is it a ghost, or is it their own brain trying to make sense of the oppressive silence?
#4

After about a minute we finally got close to the light again and I asked if she was alright, only to look over and notice that everybody else was about two metres behind me, and the only female was at the very back of the group. Almost immediately I felt the pressure leave my hand. I never brought it up with them, because they'd probably just tell me I was imagining things.
#5

#6

Many of the stories you'll read involve strange noises, and it’s easy to see why. The acoustics of a concrete tunnel can carry a sound for miles, distorting it into something unrecognizable. But sometimes, the legends are tied to real-world tragedies. In 1943, 173 people were crushed to death in London's Bethnal Green in a stampede during an air raid.
For decades since, workers and commuters have reported hearing the unexplained sounds of women and children crying in the empty station at night, a phenomenon locals have dubbed the "Screaming Spectre." This history adds a heavy, tragic weight to the unexplainable. It transforms a simple bump in the night into a potential echo of the past.
#7

I discovered during an inspection at my old public school (one of the oldest in Canada) in the basement, a tunnel. A tunnel that went on for at least 100 metres, and it very well may have gone on longer but I had this horrible vibe about being where I was, I couldn't bring myself to walk further.
Finally turned back to where I came from and it was at least 75 metres away, I immediately booked it the f**k back. Never to return again.
#8

#9

Laying on some rocks at the bottom of the flooded, partially caved in clearing was one of those old T.Vs that sit like a cabinet on the floor. At first we thought it was some kind of chest or crate but when we put a spotlight on it and realized it was an old T.V. It was definitely unsettling. The whole quarry had a creepy vibe to it but the T.V. was just really out of place. I guess some of the miners had it running off a generator or something back in the day. Creepy nonetheless.
Here is a pic for anyone interested. And no, the creepy silhouette in the top corner is not a monster, its just my friends spotlight.
P.S. I know one of the friends I was with browses Reddit so shout outs if you see this.
Beyond ghosts, there's the fear of what (or who) might be living down there, just beyond the reach of society. This idea gave rise to the classic 1984 horror flick C.H.U.D. (Cannibalistic Humanoid Underground Dwellers), a campy but effective tale about monsters lurking in the sewers of New York. While mutated creatures are fiction, the idea of a hidden, subterranean society is not entirely off the mark.
In her groundbreaking 1993 book, The Mole People: Life in the Tunnels Beneath New York City, journalist Jennifer Toth documented the very real communities of unhoused individuals living in the city's abandoned subway tunnels. These accounts blur the line between scary story and social reality, suggesting that a strange figure not be a phantom, but a fellow human being.
#10

The amount of shoes and pants you see on the tracks is astounding to me. Who is losing these article of clothing on the train. There are enough shoes and pieces of clothing i use as a personal survey marker to determine locations of flagging lamps by the single mocasin or leather boot, the pair of jeans or sparkly wallet on the ground or bench wall.
#11

The moment you enter it, it's like diving into water. Sound stops and the entire place is at a constant 14 degrees Celsius, with a slight breeze passing through. The tunnel is barely large enough for me (slightly broader than the average person) to pass without turning my body sideways. The tunnel is just high enough to work up a decent gait while hunched over. If someone ahead of you blocks a passage for a moment, the breeze stops and it feels like the entire tunnel network takes a breath. Because of the way the tunnels are constructed, they echo in such a way that your own footsteps seem to be coming from behind you. They also seem to take one more step than you do when you stop.
Ofcourse we don't allow the guys and gals to take any source of light in there, so it's pretty scary overall.
So I'm in there, posted at a side passage to ensure everyone takes the same path and doesn't get lost. I go in first, before any of the climbers arrive, so they don't know there are friendly faces in there to help them. I'm in there for a while, just waiting for the first to come by, when I see a dancing little light coming down the long hallway. I quietly settle back in my nook and wait for whoever was smart enough to hide some matches and take them away.
The light quietly bobs closer when I realise there aren't any footsteps accompanying it. I poke my head around the corner just in time to see it disappear. I hear no footsteps still.
I settle back and wait some more, when I realise I do hear some scuffling. Very faint. Breathing noises, but still very faint. I become aware of a wet heat coming from right in front of me, with a faint smell of... person, sweat, dirt? Suddenly I realise, there's someone there. Right in front of me. Inches from my face.
The breathing stops suddenly, whatever it is is aware of me aswell. Whatever or whoever it is, we're both holding our breath, both acutely aware of each other. It takes ages. I'm sitting there, unable to move, speak or breathe properly.
The wet heat passes and some minutes later I become aware of very faint light coming from my right side, which soon dissipates and leaves.
Some time later still, I hear the familiar stomping of combat boots coming down the hallway from my left. I stop the person, tell them to keep following the passageway and take the first right they come to. Out of curiosity, I ask who went in first. No one, he went in first...
it was explained much later. the first guy got lost down a dead end side passage and the second girl passed him by. She got nervous from the footsteps and removed her shoes. She saw me poke my head from around the corner and dropped the match. She passed me very slowly. One of the later checkpoints said she was crying her eyes out..
#12

Sometimes, the truth of the underground is stranger and more surreal than any ghost story. The catacombs beneath Paris are known for containing the bones of millions, but they also hide modern secrets. In 2004, police on a training exercise stumbled upon a fully equipped secret cinema deep within the tunnel network, complete with a large screen, projection equipment, and a well-stocked bar.
When the police returned a few days later to investigate, everything had vanished. The cables were cut, and a note was left on the floor that read, "Do not try to find us." This true story proves that the underground can be a place not of monsters, but of elaborate, hidden human activity, making you wonder what other secrets are being kept right under our feet.
#13

While my Grandpa was serving in the Pacific Theater the cave became a National Park. After arriving home my grandpa and his friends that survived the war went back to explore for old time sakes. They were wandering around with flashlights when they heard a tour group, considering they weren't in their 'legally' and had bypassed many Federal trespassing signs, they cut the lights and slowly but surely tried to walk unnoticed back to the entrance. Unfortunately they went deeper and spent 17 hours in there before getting out. He didn't have many stories because apparently you inch along in complete darkness without being able to see your hand infront of your face. But he said one of his friends kept saying "we didn't survive that s**t to die in here".
#14

There used to be an old abandoned school in a town by my house. It was heavily boarded up, and super hard to get into. Well, a friend and I managed to get inside, by climbing up the side of the school via a pipe/fire escape combo and slipping through a window on the roof. We explored the basement, which was flooded. It was kinda creepy seeing stairs disappear into water. We had just left the gym, when we heard footsteps coming from the doors on the other side of the gym. Scary, especially considering it sounded like it was one person (not another group of explorers like us) and blocking our exit back up to the roof (the only way out otherwise was behind us, through boarded up doors). They sounded like someone who was walking around, and stopping periodically. There was no light coming from that direction, and we couldn't fathom why someone would come into a creepy place like this alone. We waited for the footsteps to stop, then snuck across the gym, peered down the hallways, saw no one, and continued towards the stairs which would lead us back to the roof. Halfway down the hall, we hear someone SPRINTING behind us. Probably 50 meters away or so, down a typical high school hallway. Now, it is mostly dark in here, but there was a small amount of light coming in through cracks in the window boards. Still, we didn't see anything behind us as we quickly ran up the stairs. We didn't stop until we got back to the fourth floor. We listened for noise; nothing. Hopped out the window and climbed back down the pipe.
#15

Fast forward to the last day of senior year after most everyone had left. My two buddies and I, in formal attire from the day's events, unscrewed the panel from the wall. Sure enough, there was a tunnel about 5 feet below the floor. Luckily there was a [sturdy stool] for us to climb down.
There was a system of tunnels down there but our exploration was limited since we were in good clothes and there was standing water down some of the tunnels. The unexplained part is that, while there were pipes where we went, there were tunnels without pipes that went out from the buildings footprint and not towards any other building. These tunnels had inches deep standing, nasty water so we couldn't go in them in rented dress shoes. But we could make out that they connected to other tunnels which seemed to serve no purpose. I doubt there was anything sinister going on, but we thought it was pretty creepy at the time.
Ultimately, the most terrifying underground stories are often the simplest cautionary tales. For centuries, the Paris Catacombs have been a magnet for explorers, and not all of them have made it out. The most famous story is that of Philibert Aspairt, a hospital doorkeeper who, in 1793, ventured into the tunnels with a single candle and was never seen alive again.
His body was discovered 11 years later, identified only by the hospital key ring on his belt. He was found just a few yards from an exit he couldn't see in the pitch black. His fate is a permanent reminder that the underground doesn't need monsters to be deadly. The darkness, the silence, and the potential to get hopelessly lost are terrifying enough on their own.
Most tunnels keep their secrets, but if you've ever heard or seen something in the darkness underground that you still can't explain, we want to hear your story in the comments below!
#16

Houston is criss-crossed with bayous because it a swamp that needs to be drained a lot. There are these gigantic tunnels that lead to the bayous and collect water from the storm drains. When we were kids, these were great to explore. We'd make maps about how to get from one area to another using these tunnels.
Well, we set aside one Saturday to try to make all the way to a mall a couple miles away from the starting point. Our hand drawn map was about halfway done. We got lost. And then, as it is wont to do in Houston in the Summer, it started pouring down rain. This happened before but we were usually close to an exit. Not this time. It kept raining. The water got high enough that the current knocked us over. Eventually we got spit out into a bayou from a tunnel we had never even explored.
After finally getting out of the bayou and getting back to safety we realized we were almost a mile from where we started.
#17

We didn't get really freaked out until later, when we went back at night, and as we're psyching ourselves up to go in, some kind of early nineties blue Ford and a gun rack pulls into the empty parking lot. It's lights cut right through the car and made it hard to see much, but it spooked the hell out of us. We got the hell out of there, but the truck followed us around the airbase for the better part of half an hour, turning on it's high beams and tailgating us, and then turning their lights off completely and acting like they were tailing us...in spite of it only being the two cars on the road at that hour, plus the airbase being, y'know, abandoned. We're just glad we were still in the car and not inside when they got there.
#18

#19

So me and my brother are snooping around the bottom floor, and we find an open door over on the unlit half of the floor. It's just bright enough to see some empty shelves on the opposite wall through the door. We poke our heads in, and it is so dark we can't see either end of the room; it looks like an endless hallway. Some distance away, we see a blinking red light, and we nope the hell out of there and dash back upstairs.
It was probably a security camera or fire alarm or some s**t, but it was still scary because I get the feeling it only started blinking once we poked our heads in...
#20



