Sketchy Trio Spotted Climbing From Brooklyn Manhole — The Latest Chapter in New York City’s Strange Sewer Mystery
New York City has always had an unusual relationship with what lies beneath its streets.
Millions of people walk across sidewalks and roads every day without giving much thought to the enormous network of pipes, tunnels, drains and utility spaces underneath them. But in recent months, a series of mysterious late-night appearances has turned that hidden world into an unexpected source of fascination.
The latest incident happened in Brooklyn, where three unidentified people were reportedly seen climbing out of a manhole early Friday morning.
Their appearance is not an isolated event.
It is the newest episode in a strange string of incidents involving people entering or emerging from New York City's sewer system. Police and city officials have investigated several such encounters since May, while theories about who these people are and what they are doing underground have ranged from urban exploration to searching for valuables. New York Post+1
For New Yorkers, the images are undeniably strange: figures disappearing beneath the pavement in the middle of the night, sometimes wearing waders and headlamps, then emerging hours later.
The mystery has even inspired humorous comparisons to fictional underground characters.
But beneath the jokes is a more serious issue. City officials warn that entering the sewer system is both illegal and potentially extremely dangerous. The underground environment can contain hazardous gases, unstable surfaces, confined spaces and sudden flooding risks. CBS News
So who are these people?
Why are they going underground?
And why have there been so many similar sightings?
The answers remain incomplete.
The Latest Brooklyn Sighting
According to police and reporting published Friday, three people were seen climbing from a Brooklyn manhole in the early morning hours.
The incident adds to a series that has already included sightings in Brooklyn, Queens, Manhattan and Long Island.
The most recent reports have renewed attention on a phenomenon that initially seemed like a collection of unrelated oddities.
Police have not publicly established that every incident involves the same people.
That distinction is important.
The fact that several groups have been recorded entering or leaving manholes does not, by itself, prove that the incidents are connected.
Authorities are still investigating.
And while social media has produced plenty of theories, investigators have not publicly confirmed a single explanation for the activity.
It Started in Queens
The recent mystery can be traced back to May.
On May 5, three people were recorded approaching a manhole in Queens around 2 a.m.
According to CBS New York, surveillance footage showed three men entering a manhole near 250th Avenue in Astoria. One person removed the cover while the others entered the sewer, with a nearby vehicle providing illumination. CBS News
The scene was unusual enough to catch the attention of people nearby.
The individuals reportedly wore clothing suitable for underground exploration, including waders, and carried lights.
That detail would become significant later.
Waders are not exactly standard New York City streetwear.
Their presence suggested that the people expected to encounter water or unpleasant conditions underground.
It also suggested preparation.
They were apparently not simply people who accidentally stumbled into an open manhole.
They had equipment.
They had a plan.
And they were willing to spend time underground.
Then Brooklyn Joined the Mystery
Several weeks later, similar activity appeared in Brooklyn.
On May 28, people were reportedly seen entering a manhole in the Gravesend area.
Hours later, some emerged.
Then another incident occurred in South Williamsburg.
A group entered a manhole around 1 a.m. and reportedly remained underground for approximately three hours before emerging and leaving the area. Monorepo Sample1
The clustering of incidents was what transformed the story from an isolated curiosity into a genuine mystery.
One strange video might be dismissed as an unusual urban-exploration adventure.
Two might be coincidence.
Three or more occurring within a relatively short period naturally raises questions.
Are these groups connected?
Are they part of an underground exploration community?
Are they searching for something?
Are they simply copying one another after seeing the earlier videos online?
Or is there another explanation?
Police have not publicly settled those questions.
The Videos Changed Everything
Without surveillance footage, most of these incidents probably would have gone unnoticed.
But cameras are everywhere in New York.
Businesses have security cameras.
Buildings have surveillance systems.
Traffic areas are monitored.
And residents frequently record unusual events on their phones.
As a result, people entering underground spaces can leave behind a surprisingly detailed visual trail.
The May incidents generated footage showing people opening manholes, climbing down and later returning.
The images quickly circulated online.
The sight of people emerging from underground wearing protective equipment was particularly striking.
It looked almost cinematic.
Except this wasn't a movie set.
These were real people coming out of actual New York streets.
The “Mole People” Phenomenon
New Yorkers have responded to the mystery with humor.
Some social-media users compared the sewer explorers to the Teenage Mutant Ninja Turtles.
Others invoked Mario-style imagery.
Local coverage has also used terms such as “mole people” to describe the mysterious visitors to the city's underground world. The Guardian
The jokes are understandable.
New York already has a legendary mythology surrounding its subterranean spaces.
The city has subway tunnels, abandoned infrastructure, utility corridors and enormous sewer networks.
The idea that groups of people might be voluntarily exploring beneath the streets seems almost tailor-made for an urban legend.
But the reality is considerably less glamorous.
Sewers are not amusement parks.
And city officials want people to stay out.
What Are They Looking For?
One of the biggest unanswered questions is motive.
Police sources have suggested that some of the people could be treasure hunters or urban explorers.
CBS New York reported that authorities believed the men involved in one Brooklyn incident might have been searching for valuables. CBS News
That possibility sounds strange at first.
What valuable objects could possibly be hiding in a sewer?
There is a long history of people exploring abandoned or forgotten parts of cities in search of unusual artifacts.
Old infrastructure can contain remnants of previous eras.
There may be discarded objects, historical materials or other items that interest collectors.
But veteran urban explorers interviewed by WIRED and The New York Times have questioned the idea that treasure hunting necessarily explains the recent incidents.
One experienced New York urban explorer told The New York Times that after more than 100 trips into the city's sewers, he had found very little of financial value. Monorepo Sample1
That doesn't prove the recent groups aren't searching for valuables.
It simply means the theory remains unconfirmed.
Urban Exploration Is Another Possibility
Urban exploration, sometimes called “urbex,” involves visiting unusual, abandoned or normally inaccessible places.
The hobby can include abandoned buildings, tunnels, infrastructure and other locations that ordinary members of the public never see.
New York has long attracted urban explorers because of its history and enormous infrastructure.
The city's sewer network alone is vast.
The New York Times reported that New York has approximately 7,500 miles of sewer pipes. Monorepo Sample1
For someone interested in hidden infrastructure, that underground network could obviously be fascinating.
But fascination doesn't make entry legal or safe.
The people captured on camera appeared prepared for the environment.
Headlamps, waders and other equipment indicate that at least some participants may have experience navigating underground spaces.
That observation has led experienced explorers to suggest that the people involved may know what they're doing.
Still, experience cannot eliminate the hazards.
Why the Sewer Is So Dangerous
From the surface, a manhole can look like little more than a circular metal cover.
Underneath, the situation can be dramatically different.
Sewer systems are confined environments.
There can be limited visibility.
Surfaces may be slippery.
Water levels can change.
Air quality can be hazardous.
And underground conditions can become dangerous without much warning.
The city's Department of Environmental Protection has specifically warned about “noxious” and potentially deadly gases, unstable surfaces, flooding and confined spaces. CBS News
That warning is not simply bureaucratic language.
A person entering a sewer does not necessarily know what gases are present or how quickly conditions might change.
Rain can also create serious risks.
A system that seems relatively calm at one moment can become dangerous after heavy precipitation.
That is one reason officials strongly discourage unauthorized entry.
The Flooding Problem
One of the biggest dangers underground is water.
Sewers are designed to transport water.
That means anyone exploring them is entering an environment where water movement is a fundamental part of the infrastructure.
Heavy rain can increase flows.
Water can move quickly through confined spaces.
A person deep underground may not have the same warning that someone above ground receives from watching the weather.
For experienced explorers, weather conditions therefore become an important consideration.
But even careful planning cannot eliminate every risk.
That is one reason the city's public message has been unusually direct: stay out.
Hazardous Gases
Another danger is invisible.
Sewers can contain gases that humans cannot safely detect simply by looking around.
Some gases can cause illness or unconsciousness.
Others can be fatal.
A person entering a confined underground space therefore cannot rely on ordinary senses to determine whether the environment is safe.
Professional workers entering such spaces use specialized procedures and equipment.
An urban explorer with a headlamp and waders may look prepared in a video, but those items alone do not make an environment safe.
That distinction is important because viral videos can make risky activities look much easier than they actually are.
A Question of Infrastructure
There is another reason city officials are concerned.
Manholes don't only provide access to sewers.
They can also provide access to other critical underground infrastructure.
That creates security concerns.
New York City relies on a massive network of underground systems to function.
Water.
Sewage.
Electricity.
Communications.
Transportation.
Utility networks.
Some are accessible through street-level infrastructure.
The city therefore has an interest in preventing unauthorized access.
The issue isn't simply whether a few people want to explore.
It is whether unauthorized activity could interfere with infrastructure or create opportunities for theft or vandalism.
Missing Manhole Covers
The problem can become even more serious when covers are removed and left unsecured.
The New York Times reported that a New York City council member had received complaints about missing, damaged or dislodged manhole covers. Monorepo Sample1
An open manhole can be dangerous to pedestrians.
That danger doesn't depend on criminal intent.
Someone walking down the sidewalk at night may not see an opening.
A cyclist could encounter it unexpectedly.
A person stepping out of a vehicle could fall.
The city therefore has to treat unauthorized removal of covers as more than an oddity.
It's a public-safety issue.
The Broader Manhole Problem
Manholes are usually taken for granted.
They are part of the urban landscape.
Most people walk over them without thinking.
But once a cover is removed, the infrastructure becomes an immediate hazard.
That is why the recent incidents have prompted concern from local officials.
If people are repeatedly entering underground systems, authorities need to know whether the activity is isolated or part of a larger pattern.
And if people are removing covers without authorization, the city needs to ensure that those covers are replaced and secured.
A Similar Incident Happened in 2025
The recent events aren't entirely unprecedented.
CBS New York reported that a similar Brooklyn incident in April 2025 resulted in three people being taken into custody and charged with burglary and criminal mischief. CBS News
That earlier case is significant because it demonstrates that underground activity in New York has previously crossed into criminal allegations.
It also complicates the idea that the recent incidents are simply harmless urban exploration.
Different people may have different motives.
One group could be exploring.
Another could be looking for valuable materials.
Another could have an entirely different objective.
That is why authorities have been careful not to assume that every sewer-diving incident has the same explanation.
The July Arrests
The situation also escalated in July 2026.
According to The New York Times, police arrested two men who they said were sewer diving in Brooklyn.
The men were charged with criminal trespass. Monorepo Sample1
That development demonstrated that authorities were not simply watching the phenomenon from a distance.
They were prepared to make arrests when people were identified.
But even after arrests, the larger mystery remained.
There was still no confirmed explanation for why multiple groups had apparently begun entering New York's underground infrastructure.
The Midtown Sighting
Then came another striking episode.
On August 18, three people were recorded emerging from a manhole on Seventh Avenue across from Madison Square Garden and Penn Station.
CBS New York reported that the individuals appeared after 4 a.m. and that the person who filmed the scene believed at least five people had emerged, although only three were captured on camera. CBS News
The location made the incident particularly eye-catching.
Penn Station is one of the busiest transportation areas in New York.
Madison Square Garden is nearby.
Thousands of people pass through the area.
And yet, in the early morning hours, several people were apparently emerging from beneath the pavement.
The footage looked so unusual that viewers described the people as appearing professional and experienced.
Police sources again raised the possibility of urban explorers or treasure hunters.
Authorities also said they did not believe the incident was connected to terrorism. CBS News
Then Manhattan Had Another Sighting
The latest wave has continued into September.
ABC7 New York reported that three unidentified people were seen emerging from a sewer on Manhattan's Upper East Side early Wednesday morning.
Police said officers responded to a 911 call around 4:35 a.m. near Park Avenue and East 61st Street.
The three individuals reportedly left the area in two vehicles.
No arrests had been made at the time of the report, and police said the investigation remained ongoing. ABC News
The timing was notable because New York was hosting heightened security operations around the United Nations General Assembly.
However, authorities did not publicly connect the sewer incident to any terrorist activity.
Again, that distinction matters.
An unusual incident happening during a major international event does not establish a connection between the two.
Why People Are Fascinated
There is something inherently compelling about discovering that ordinary streets contain an enormous hidden world.
New York's surface is familiar.
People know the avenues.
They know the subway entrances.
They know the skyscrapers.
They know the restaurants, parks and stores.
But beneath all of that is a different city.
Pipes carry water.
Sewers transport waste.
Utilities run through hidden corridors.
Infrastructure connects neighborhoods in ways that most residents never see.
The recent videos offer a glimpse into that invisible city.
That's one reason they have captured so much attention.
The Internet Turns Mystery Into Entertainment
Once the first videos appeared, the story became perfect social-media material.
The footage was short.
The people were mysterious.
The locations were recognizable.
The activity was bizarre.
And there was no immediate explanation.
That combination practically guarantees online speculation.
Memes followed.
People joked about fictional sewer dwellers.
Others proposed elaborate theories.
Some treated the participants as modern-day treasure hunters.
Others wondered whether they were exploring forgotten parts of the city.
The danger is that entertainment can blur the difference between confirmed information and speculation.
A funny caption can make a theory look like a fact.
What Authorities Actually Know
Based on public reporting, authorities know that multiple people have been recorded entering or leaving New York-area manholes.
They know some participants have worn equipment such as waders and headlamps.
They know some incidents have involved multiple people.
They know some people have remained underground for hours.
They know at least some participants have been arrested or charged in connection with particular incidents.
But authorities have not publicly established that all of the incidents are connected.
And they have not publicly confirmed a single overarching motive.
That is the most important fact to remember.
The mystery remains a mystery.
Could They Be Treasure Hunters?
It's possible.
Police sources have raised the possibility.
But there is limited public evidence showing exactly what the participants were searching for.
Urban explorers have pointed out that sewers are not particularly attractive places to search for valuable objects.
That doesn't mean someone couldn't believe otherwise.
People can enter dangerous places for many reasons.
Curiosity alone can be powerful.
Could They Be Urban Explorers?
This is another plausible explanation.
The equipment observed in some videos is consistent with people intentionally preparing for an underground environment.
Experienced urban explorers have described similar activities.
But again, there is no public confirmation that every group captured on camera belongs to an organized urban-exploration community.
It is entirely possible that different people independently decided to explore the sewer system.
Could the Incidents Be Connected?
This is one of the biggest unanswered questions.
The incidents share several characteristics:
They happened at night or in the early morning.
Multiple people were involved.
Manhole covers were removed.
Participants spent significant periods underground.
Some used headlamps or other equipment.
Several incidents occurred in New York City boroughs within months of one another.
Those similarities naturally invite speculation.
But similarities are not proof of coordination.
Investigators would need additional evidence—such as communications, common equipment, identifiable individuals, shared vehicles or other links—to establish whether separate incidents are connected.
Until that happens, it is better to treat them as a series of incidents rather than a confirmed coordinated operation.
The Danger of Copycat Behavior
There is another possibility worth considering: imitation.
Once unusual videos become popular, other people may become curious.
Someone sees a group exploring a sewer online.
They think it looks adventurous.
They decide to try it themselves.
That can produce a chain reaction without there being any organized group behind the incidents.
The popularity of the videos therefore creates a potential problem of its own.
The more glamorous the activity looks online, the greater the chance someone may underestimate its risks.
Why the City Wants It to Stop
From the city's perspective, the answer is straightforward.
Sewers are infrastructure.
They are not public recreation areas.
Unauthorized entry can endanger the people going underground, interfere with city operations and potentially create hazards for everyone above ground.
The Department of Environmental Protection has explicitly said that people should never enter pipes, drains, catch basins, manholes or outfalls. CBS News
That warning is perhaps the least mysterious part of the entire story.
The city does not want people underground.
The Human Side of the Mystery
There is also an important human element to these stories.
The people appearing in the videos are real individuals.
They may have families.
They may have jobs.
They may simply be fascinated by places most people never see.
Until authorities establish otherwise, it would be inappropriate to assume criminal motives merely because someone appears in a strange video.
At the same time, the public does not need to ignore legitimate safety and security concerns.
Both things can be true.
The activity can be fascinating while also being dangerous and potentially unlawful.
A City Built on Hidden Systems
Perhaps the strangest part of the story isn't that people are entering the sewer system.
It's that New York has such an enormous underground world to explore in the first place.
Cities are often described through their skylines.
New York is famous for skyscrapers.
But the infrastructure below street level is just as important to the city's existence.
Every day, unseen systems carry water, waste, electricity and communications.
The city above ground depends on the city below it.
That makes unauthorized exploration more consequential than simply wandering into an abandoned building.
What Happens Next?
The latest Brooklyn sighting is likely to keep the mystery alive.
Police will continue investigating.
Additional surveillance footage may emerge.
People involved in earlier incidents may be identified.
And, given the growing public attention, more sightings may be reported.
The biggest questions remain:
Who are these people?
Are the incidents connected?
What are they looking for?
How long have they been doing this?
And why are they willing to risk entering one of the city's most unpleasant and hazardous environments?
For now, there are more theories than answers.
The Strange Story Beneath New York
New York has always produced unusual stories.
But few are quite as visually memorable as people emerging from a manhole before dawn.
The latest Brooklyn sighting adds another chapter to a mystery that began with a handful of nighttime sewer excursions and expanded into a citywide curiosity.
What initially looked like an isolated oddity has now appeared in multiple locations, including Queens, Brooklyn and Manhattan, with a related incident reported on Long Island. Monorepo Sample1+1
Police have investigated the activity, and at least some people have faced criminal charges in connection with earlier incidents.
Yet the central question remains unanswered.
Nobody has publicly established exactly what is driving the recent wave of underground exploration.
Maybe it's curiosity.
Maybe it's urban exploration.
Maybe some participants are searching for valuables.
Maybe different people have completely different reasons.
For now, the evidence doesn't justify a single definitive explanation.
What is clear is that New York's underground infrastructure is not a safe playground.
The city's sewer system contains real hazards, and officials have repeatedly warned people to stay out. CBS News
So while the videos may continue to fascinate the internet, the safest place to observe this strange phenomenon is from above ground.
After all, New York already has enough mysteries on its streets.
There is probably no need to go looking for them underneath.
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