All across Europe, these narrow underground tunnels called Erdstall has been discovered.
All across Europe, these narrow underground tunnels called Erdstall has been discovered.

In Bavaria in Germany alone, over 700 has been found so far. The tunnels are tiny. Between
In Bavaria in Germany alone, over 700 has been found so far. The tunnels are tiny. Between

1-1.5 meters high and up to 1 meters wide. The thing is no one knows who build them,
1-1.5 meters high and up to 1 meters wide. The thing is no one knows who build them,

for what purpose, or even when they where built. Some believe that they served some
for what purpose, or even when they where built. Some believe that they served some

sort of religious or spiritual purpose, while some think the tunnels where simply used for
sort of religious or spiritual purpose, while some think the tunnels where simply used for

hiding and shelter. But there is not a single written record of the construction of one
hiding and shelter. But there is not a single written record of the construction of one

of these tunnels. They where all seemingly built in secrecy which is strange given that
of these tunnels. They where all seemingly built in secrecy which is strange given that

entrances have been found inside houses, near churches and cemeteries, as well as in the
entrances have been found inside houses, near churches and cemeteries, as well as in the

middle of the woods. If the tunnels were used and possibly built by Christians, why do records
middle of the woods. If the tunnels were used and possibly built by Christians, why do records

of Christian kingdoms fail to mention them? It's also very unlikely that they where used
of Christian kingdoms fail to mention them? It's also very unlikely that they where used

as dwellings or any sort of long term inhabitation as there's essentially no archaeological material
as dwellings or any sort of long term inhabitation as there's essentially no archaeological material

to be found within them. No residue of any kind except a few minor bits of coal and ceramics
to be found within them. No residue of any kind except a few minor bits of coal and ceramics

dating back from anywhere between the 10th and 12th century.
dating back from anywhere between the 10th and 12th century.

Beyond that, these tunnels are a mystery.
Beyond that, these tunnels are a mystery.

Between 1982 and 1985, a group called The Brabant Killers carried out a number of violent
Between 1982 and 1985, a group called The Brabant Killers carried out a number of violent

attacks in and around the province of Brabant in Belgium. The killers would usually attack
attacks in and around the province of Brabant in Belgium. The killers would usually attack

supermarkets and restaurants and randomly killed and tortured 28 people in the process.
supermarkets and restaurants and randomly killed and tortured 28 people in the process.

According to the few surviving victims, the group consisted of three main leaders called The Giant,
According to the few surviving victims, the group consisted of three main leaders called The Giant,

The Killer, and The Old Man. What remains a mystery is the motive behind the attacks. They would only steal
The Killer, and The Old Man. What remains a mystery is the motive behind the attacks. They would only steal

minor amounts of money and sometimes even throw the money away when they where done.
minor amounts of money and sometimes even throw the money away when they where done.

What makes it even more strange is that after an attack in December of 1983,
What makes it even more strange is that after an attack in December of 1983,

they just vanished.
they just vanished.

Almost two years later they would resurface and commit three of their
Almost two years later they would resurface and commit three of their

most violent attacks yet and kill another 16 people, before disappearing again. Since
most violent attacks yet and kill another 16 people, before disappearing again. Since

1985, no more attacks have been reported and no solid evidence as to who or why they did it
1985, no more attacks have been reported and no solid evidence as to who or why they did it

has been found.
has been found.

Something strange is happening to residents in a village in Kazakhstan. It's referred
Something strange is happening to residents in a village in Kazakhstan. It's referred

to as Sleepy Hollow or simply The Sleeping Sickness. At random points throughout the
to as Sleepy Hollow or simply The Sleeping Sickness. At random points throughout the

day, without reason or warning, they will fall asleep. Everyday, the villagers simply fall
day, without reason or warning, they will fall asleep. Everyday, the villagers simply fall

asleep in broad daylight and won't wake up until several hours or even days later. It's
asleep in broad daylight and won't wake up until several hours or even days later. It's

believed to be some form of brain decease but medical experts can't find a verifiable
believed to be some form of brain decease but medical experts can't find a verifiable

cause for it, much less a cure or some form of prevention method. Other culprits could
cause for it, much less a cure or some form of prevention method. Other culprits could

be radiation or carbon monoxide poisoning, both of which has been disproven.
be radiation or carbon monoxide poisoning, both of which has been disproven.

Welcome to the tiny village of Yangsi in China. This village only has a population of around
Welcome to the tiny village of Yangsi in China. This village only has a population of around

80 people, half of which are dwarfs. It's simply been dubbed The Dwarf Village. What's
80 people, half of which are dwarfs. It's simply been dubbed The Dwarf Village. What's

strange about this is that the probability of stunted growth is about 1 in 20,000.
strange about this is that the probability of stunted growth is about 1 in 20,000.

In other words, there has to be a very specific reason for this phenomenon. Some think it
In other words, there has to be a very specific reason for this phenomenon. Some think it

has something to do with the soil in the region and the locals believe the village to be cursed.
has something to do with the soil in the region and the locals believe the village to be cursed.

But as Chinese authorities won't allow outsiders to visit, all we have to go on are a few photographs
But as Chinese authorities won't allow outsiders to visit, all we have to go on are a few photographs

and speculation.
and speculation.

It's the 12th of June, 2009. A man arrives in Sligo, Ireland and checks in at the local
It's the 12th of June, 2009. A man arrives in Sligo, Ireland and checks in at the local

hotel. He writes down the name Peter Bergmann and an address in Austria. 3 days later, he
hotel. He writes down the name Peter Bergmann and an address in Austria. 3 days later, he

would be found dead at beach not far from the hotel. The information he gave was later
would be found dead at beach not far from the hotel. The information he gave was later

found out to be false. The address in Austria didn't exist and no one by the name of Peter
found out to be false. The address in Austria didn't exist and no one by the name of Peter

Bergmann could be found to fit his description. His last few days, was captured on cameras
Bergmann could be found to fit his description. His last few days, was captured on cameras

in and around the hotel. He can be seen leaving with a purple bag several times only to return
in and around the hotel. He can be seen leaving with a purple bag several times only to return

without it. Most likely to dispose of possessions that could potentially reveal his true identity.
without it. Most likely to dispose of possessions that could potentially reveal his true identity.

Examination after his death revealed that he had severe prostate cancer but that he
Examination after his death revealed that he had severe prostate cancer but that he

had not taken any painkillers or received any sort of treatment for it. It's believed
had not taken any painkillers or received any sort of treatment for it. It's believed

he committed suicide by drowning. But what makes the case so mysterious are the lengths
he committed suicide by drowning. But what makes the case so mysterious are the lengths

he went too to keep his identity hidden. He knew exactly where to go to hide from the
he went too to keep his identity hidden. He knew exactly where to go to hide from the

cameras and even cut off the labels on his clothes. Before his death he managed to mail
cameras and even cut off the labels on his clothes. Before his death he managed to mail

a few letters that police where unable to track down. So someone out there likely knows
a few letters that police where unable to track down. So someone out there likely knows

who Peter Bergmann really was.
who Peter Bergmann really was.

This photo was taken in 1918. It's a photo of a squadron which served in WWI. The story
This photo was taken in 1918. It's a photo of a squadron which served in WWI. The story

goes that three days prior to the photo being taken, a mechanic named Freddy Jackson was
goes that three days prior to the photo being taken, a mechanic named Freddy Jackson was

killed by an airplane propeller. His funeral had supposedly taken place on the day the
killed by an airplane propeller. His funeral had supposedly taken place on the day the

photograph was taken. Now here's the thing. If we zoom in on the top row here, just behind
photograph was taken. Now here's the thing. If we zoom in on the top row here, just behind

the 4th person to the left, there appears to be someone else in the photo. Members of
the 4th person to the left, there appears to be someone else in the photo. Members of

the squadron later recognized the face as Freddy Jackson. So is this a ghost captured on camera?
the squadron later recognized the face as Freddy Jackson. So is this a ghost captured on camera?

Well maybe. It sure looks like it. However a more realistic explanation is that the photo
Well maybe. It sure looks like it. However a more realistic explanation is that the photo

is a composite. It's essentially where you merge two or more photos together before presenting
is a composite. It's essentially where you merge two or more photos together before presenting

the final image. A technology that definitely existed at the time and was often used to
the final image. A technology that definitely existed at the time and was often used to

include deceased family members in family photos. Another discrepancy is the fact that
include deceased family members in family photos. Another discrepancy is the fact that

the story of Freddy Jackson doesn't appear to be true. There was a man named Frederick
the story of Freddy Jackson doesn't appear to be true. There was a man named Frederick

William Jackson who died a few weeks before the photo was taken. However he died of heart
William Jackson who died a few weeks before the photo was taken. However he died of heart

failure and was a marine artilleryman, not a mechanic.
failure and was a marine artilleryman, not a mechanic.

Now something more recent, in late 2014 just outside of Stockholm, Sweden something strange
Now something more recent, in late 2014 just outside of Stockholm, Sweden something strange

happened. On October 17, the Swedish military received reports of a damaged submarine in
happened. On October 17, the Swedish military received reports of a damaged submarine in

the Stockholm archipelago. After numerous days of searching and intelligence gathering,
the Stockholm archipelago. After numerous days of searching and intelligence gathering,

they had conclusive evidence that a foreign submarine had secretly reached far into Swedish
they had conclusive evidence that a foreign submarine had secretly reached far into Swedish

waters. And I mean, they got really close. It would be the equivalent of finding a submarine
waters. And I mean, they got really close. It would be the equivalent of finding a submarine

lurking around in Lower Bay just outside of New York or far into the Thames River in London.
lurking around in Lower Bay just outside of New York or far into the Thames River in London.

It just shouldn't happen. But it did. The military believes the submarine to be Russian
It just shouldn't happen. But it did. The military believes the submarine to be Russian

as encrypted transmissions sent over emergency frequencies known to be used by Russian units
as encrypted transmissions sent over emergency frequencies known to be used by Russian units

was recorded. The sources of these transmissions were identified as a submarine and a military
was recorded. The sources of these transmissions were identified as a submarine and a military

site in the Kaliningrad region. But there's no definitive proof and Russian officials
site in the Kaliningrad region. But there's no definitive proof and Russian officials

has denied the accusations. But no matter who it was, the question is, why?
has denied the accusations. But no matter who it was, the question is, why?

What intentions could they've possibly had?
What intentions could they've possibly had?

We may never know.
We may never know.

On a remote island in the southeastern Pacific Ocean hundreds of absolutely massive statues
On a remote island in the southeastern Pacific Ocean hundreds of absolutely massive statues

can be found called Moai. At some point during the first millennium, people settled here
can be found called Moai. At some point during the first millennium, people settled here

on Easter Island and created a thriving culture which would become known as the Rapa Nui people.
on Easter Island and created a thriving culture which would become known as the Rapa Nui people.

In 1722, the island became known to the outside world and ever since, people all over the
In 1722, the island became known to the outside world and ever since, people all over the

globe has been trying to figure out how exactly they did it. How did they erect these gigantic
globe has been trying to figure out how exactly they did it. How did they erect these gigantic

monoliths that could weigh up to 86 tons. Not only that, they somehow transported hundreds
monoliths that could weigh up to 86 tons. Not only that, they somehow transported hundreds

of them to various location across the island. And it should also be noted that the island
of them to various location across the island. And it should also be noted that the island

was almost completely treeless when they did all this. The most obvious theory is of course
was almost completely treeless when they did all this. The most obvious theory is of course

that they simply dragged the statues on the ground using ropes, but that would take an
that they simply dragged the statues on the ground using ropes, but that would take an

enormous amount of manpower, time, and effort. Keep in mind there's a total of 887 of these
enormous amount of manpower, time, and effort. Keep in mind there's a total of 887 of these

things. Another theory is that once erected, they made the statues sort of walk by attaching
things. Another theory is that once erected, they made the statues sort of walk by attaching

ropes to the top and then wiggle it side to side. This theory was actually tested using
ropes to the top and then wiggle it side to side. This theory was actually tested using

a 5 ton replica and it actually worked. The question is, would it also work when the statue is
a 5 ton replica and it actually worked. The question is, would it also work when the statue is

10 meters high weighing over 80 tons?
10 meters high weighing over 80 tons?

In 2004 a man, who would later adopt the name Benjamin Kyle, woke up outside a Burger King
In 2004 a man, who would later adopt the name Benjamin Kyle, woke up outside a Burger King

in the US without any clothes, any ID, or any memories. He was soon diagnosed with psychogenic
in the US without any clothes, any ID, or any memories. He was soon diagnosed with psychogenic

amnesia as he could not remember who he was or even his own name. Today he is the only
amnesia as he could not remember who he was or even his own name. Today he is the only

American citizen officially listed as missing despite his whereabouts being known. Even
American citizen officially listed as missing despite his whereabouts being known. Even

with the widespread media coverage of his bizarre case, no one has ever come forward
with the widespread media coverage of his bizarre case, no one has ever come forward

claiming to have known Benjamin Kyle in his past life. One unfortunate side effect of
claiming to have known Benjamin Kyle in his past life. One unfortunate side effect of

not having your own identity is that, without a social security number, he's unable to do normal things
not having your own identity is that, without a social security number, he's unable to do normal things

such as having a stable job. It really is a mystery how absolutely no one has recognized him.
such as having a stable job. It really is a mystery how absolutely no one has recognized him.

Every now and then, discoveries are made that forces us to question the things we taught
Every now and then, discoveries are made that forces us to question the things we taught

we knew. Evidence so far has suggested that 13,000 years ago, humanity consisted of simple
we knew. Evidence so far has suggested that 13,000 years ago, humanity consisted of simple

minded hunters and gatherers. People who lacked the ability to create complex symbolic systems,
minded hunters and gatherers. People who lacked the ability to create complex symbolic systems,

social hierarchies, and division of labour. Yet here, at Göbekli Tepe in Turkey we have
social hierarchies, and division of labour. Yet here, at Göbekli Tepe in Turkey we have

found evidence that speak against all that. This over 13,000 year old complex is believed
found evidence that speak against all that. This over 13,000 year old complex is believed

to have served as a sanctuary making it the oldest temple and religious site in the world.
to have served as a sanctuary making it the oldest temple and religious site in the world.

The temple not only predate the invention of writing and the wheel, they were built
The temple not only predate the invention of writing and the wheel, they were built

before the so-called Neolithic Revolution when humans went from hunting and gathering
before the so-called Neolithic Revolution when humans went from hunting and gathering

to developing agriculture, settlements, and the domestication of plants and animals. And
to developing agriculture, settlements, and the domestication of plants and animals. And

the existence of this place raises far more questions than it answers. How did nomadic,
the existence of this place raises far more questions than it answers. How did nomadic,

neolithic man manage to organize a workforce to build this complex? Why was it built? Why
neolithic man manage to organize a workforce to build this complex? Why was it built? Why

does it predate similar structures by thousands of years? What caused them to become so much
does it predate similar structures by thousands of years? What caused them to become so much

more advanced then other communities of that time? This discovery could force us to rethink
more advanced then other communities of that time? This discovery could force us to rethink

a crucial part of human evolution. For now it will remain an unsolved mystery.
a crucial part of human evolution. For now it will remain an unsolved mystery.