Original subtitles

They're watching you.

More than 5,000 satellites circle the Earth.

Every day, they uncover new

mysterious phenomena that defy explanation.

Revealed from the skies,

the mystery of the Louisiana swamp castle.

My God, just look at it. It's incredible!

NARRATOR: The 100,000-square-mile cipher.

These patterns stretch everywhere,

from Texas to North Dakota.

NARRATOR: And Russia's deadly mega chasm.

It's said that it can actually suck in aircraft.

NARRATOR: Baffling phenomena.

Mysteries from space.

What on Earth are they?

**

**

**

The seemingly endless bayous of southern Louisiana,

thousands of square miles of marshlands,

home to gators, birds,

and not much else.

MORGAN: This area could not be more inhospitable.

This is not a place that

is inclined towards sustaining human life.

NARRATOR: Yet despite this,

a satellite image taken on January 10th, 2019,

has uncovered mysterious evidence of human activity

in these swamps.

Looking at the image, I'm seeing two different

structures here.

To the right, there's sort of a string of boxes or blocks.

The other structure is really unusual and kind of surprising.

It looks like the top of a rook,

like a giant chess piece in the water.

It's unnerving to think about what's missing

from this picture.

There could be an entire town under the water.

What happened here?

NARRATOR: What's drawn Martin Morgan

to this site is that, officially,

there has never been a town in these marshlands.

But clues suggest otherwise.

That's not natural.

You can totally tell -- it's a road.

Look at that.

This is a bit eerie.

**

NARRATOR: The abandoned road leads Morgan to the set of

structures at the eastern side of the river mouth.

It's just up ahead here.

This thing is incredible.

It's even bigger than it looked

in the satellite photography.

NARRATOR: A line of concrete ruins stretches

for some 300 yards along the shore.

Behind them are concealed

hundreds of poles driven deep into the lake bed.

MORGAN: This was a massive facility.

Somebody with money, lots of it,

paid to have this built.

That suggests, to me, government money.

NARRATOR: Morgan thinks the structures bear

the hallmarks of a secret military installation.

MORGAN: Judging by the age, these could be seven

or eight decades old.

That's dropping all of this right into

the time period of the second World War.

This thing is amazing. Look at this.

NARRATOR: While much of the structure has long

since rotted away or been destroyed by hurricanes,

clues to what drew the military

into these swamps do remain.

MORGAN: All down the line of these platforms,

there are iron rings.

These are gun mounts.

The fact that you've got all these gun platforms

lined up like this

makes me think that I might be looking at

an anti-aircraft training center.

NARRATOR: Declassified military records confirm

that these sinking ruins were once a secret

World War II training base called Shell Beach,

and it played a key role in tackling a catastrophic

shortcoming in America's defenses at the dawn

of World War II.

During World War II, the American forces,

particularly the Navy,

had this sort of sense of invincibility.

Now that is an image that's vastly

different to what the state of the U.S. military was

just as the country was entering World War II.

NARRATOR: When Japanese fighters and dive bombers

devastate Pearl Harbor,

U.S. battleships are ill-prepared

to defend themselves.

It's a mistake the Navy vows never to repeat.

PAVELEC: When we get involved in the war after

Pearl Harbor, the U.S. military

has to begin a crash training program

to get sailors trained up to shoot down enemy airplanes.

NARRATOR: With Nazi U-boats and planes also threatening

America's shores,

the Navy starts transporting rookie gunners into

the Louisiana swamp

to teach them the art of anti aircraft warfare.

PAVELEC: Shooting across the lake would have

provided a nice field of fire,

and pilots would actually fly target planes to

be shot at to get practice against live targets.

NARRATOR: 40% of the recruits are volunteers,

many of them fresh from high school.

After just eight weeks, they are sent to fight

fascism in Europe

or to join the Pacific Fleet and experience

the hell of naval combat.

MORGAN: Men who trained here would ultimately be on board

ships that are fighting off waves of Japanese

suicide aircraft.

NARRATOR: During the first few months of the war,

U.S. anti-aircraft gunners shoot down 56 enemy planes.

Within three years, they are bringing

down almost 20 times that number,

thanks in no small part to these weird ruins

in the Louisiana Bayous.

MORGAN: Just think about how critical this was.

I mean, in many ways,

it was facilities like this that produced

the final victory in the second World War.

NARRATOR: The decaying World War II facility

sits just 400 yards

from the larger sunken structure in the image.

It could be a barracks for the training center,

but that doesn't make any sense.

How would you move people back and forth?

NARRATOR: Up close, the mystery deepens.

Look at this thing.

This looks like what a castle I drew as a kid looked like.

If we were in Europe, I'd go,

"That's definitely a fort."

But we're not in Europe. Were in Louisiana.

NARRATOR: There are other forts on the U.S.'s

Southern coastline dating from the Civil War.

But this is unlike any of them.

MORGAN: The forts are very low profile.

But this thing, it's just looming up out of the marsh.

It's incredible.

To really get to the bottom of what this structure is,

I'm gonna have to get on shore and walk around it.

NARRATOR: Coming up, breaking into the swamp castle.

MORGAN: My God, look at this thing.

I mean, it's like a cathedral in here.

NARRATOR: And the 1,000-year-old monks of New Hampshire.

If true, there was a settlement here

well before Columbus.

NARRATOR: Drawn by strange, isolated structures

revealed from space,

historian Martin Morgan is braving

the alligator-infested swamplands of Louisiana.

Almost there.

Almost there.

NARRATOR: 25 miles from New Orleans,

a semi-submerged fortification sits next to the ruins of

a World War II training camp.

My God, look at this thing.

This is absolutely spectacular.

NARRATOR: To Morgan, the structure's medieval design

is unprecedented.

**

**

I mean, it's like a cathedral in here.

**

I have never seen anything like this.

This is unique. This is one of a kind.

NARRATOR: The crumbling walls suggest the swamp fort

likely dates from the early 1800s.

This structure clearly belongs to the era before

the introduction of rifled artillery,

because in the era of rifled artillery,

this thing would not have stood a chance.

NARRATOR: The middle of the 19th century

witnesses the arrival of rifled barrels,

revolutionizing the power, range,

and accuracy of artillery.

Brick fortifications are replaced

with low-profile concrete ones,

which can better withstand the apocalyptic

onslaught of this new generation of weapons.

There are very obvious signs

that this structure is falling apart.

I don't think it's safe to be in here.

NARRATOR: Morgan now believes that the fort has its

origins in a momentous event in early American history.

MORGAN: If I'm right about this fort,

it's built because of the War of 1812.

During that conflict, the British attacked American

cities like Baltimore, Washington, D.C.,

and then New Orleans itself.

[cannons blasting]

NARRATOR: The War of 1812 is both

the first conflict waged by the newly independent

United States,

and the last time enemy soldiers successfully

invaded American soil.

WALTERS: The British-American War of 1812

is sometimes even called

a second war of independence.

Interestingly enough, one of the key turning points

of the war was actually fought around New Orleans basin.

NARRATOR: In the early 19th century,

Britain is still trying to control its former

colony by restricting trade and supporting

Native American rebels.

But what finally pushes the U.S. into war was the practice

of impressment,

the capturing of American sailors and forcing them to

work on British ships.

MORAN: The Americans are naturally angry at

this blatant disregard of the sovereignty of

American ships.

HYMEL: It's a black eye to the fledgling government,

and that's just not gonna sit right.

NARRATOR: On June 18th, 1812, President James Madison

signs the order to do battle

with a nation whose warships outnumber his by 30 to 1.

Despite the overwhelming firepower of the British Navy,

actually, the Americans do quite well.

HYMEL: But while the new United States is having victories

at sea, it's on the land that they're facing defeat

after defeat against the king's troops.

NARRATOR: In 1814, after capturing Detroit,

Washington D.C., and burning the White House to the ground,

the British turned their attention to New Orleans.

PAVELEC: New Orleans is vitally important.

If the British can take New Orleans,

they control shipping in and out of the center

of the United States.

NARRATOR: On December 23rd, 1814,

50 British ships steal through

the waters to the north of the fort,

towards the American vessels protecting New Orleans.

PAVELEC: The British race in and catch

the Americans unprepared,

and they're overtaken very quickly and very easily.

MUNOZ: By winning that battle, the British were effectively

allowed to set up a beachhead

for a larger assault on the city of New Orleans.

NARRATOR: The British now believe New Orleans is

there for the taking,

but they haven't counted on the defensive prowess

and determination

of the man tasked with defending the city,

General Andrew Jackson.

HYMEL: Andrew Jackson pieces together vagabonds and pirates,

as well as regular army troops,

and they defend the line that the British just can't break.

PAVELEC: The army stand behind what they will eventually call

the Jackson line, and the British suffer

horrendous losses and have to retreat.

NARRATOR: The battle for New Orleans proves to be

the last major engagement of the war,

and its hero, General Jackson,

goes on to become the seventh president of the United States.

Stung by how close their new nation had come

to being conquered, the U.S. military

shores up defenses around the city

by building the swamp castle revealed from the skies.

That would mean that this fort was constructed with

the thought in mind that some other foreign power,

maybe even the British again, would attack using the same

method as was used in late 1814.

NARRATOR: The fort is a ghostly relic

of America's early struggle for freedom.

A century later, when terror once again

threatens these shores,

the military turns to the Louisiana bayous to conduct

vital training for its World War II troops.

Today, both structures are being swallowed by the swamps

they were built to help protect.

HYMEL: And it's kind of amazing that you've got these two

structures within spitting distance of each other that

were developed

because the United States was under threat

from a foreign power.

NARRATOR: Coming up, attack of the black blizzard.

This must have been hell on Earth.

NARRATOR: And an invisible killer

stalks Africa's elephants.

This is really shocking.

These look like full-grown, healthy elephants,

and they're just laying there dead.

NARRATOR: July 2010.

An aerial survey scans the state of Nebraska,

the heart of America's agricultural breadbasket.

What we're looking at here is clearly farmland,

but there's something strange about this farmland.

RUBEN: There are miles of these dark lines.

It looks like bits of tic-tac-toe boards just

kind of cut up and scattered all around the landscape.

NARRATOR: Closer analysis reveals

the mystery patterns appear to be rows of trees,

but what's really weird about them is how much of the country

they cover.

As I zoom out, I can see that these

patterns stretch hundreds of miles,

from Texas to North Dakota.

Maxar's SecureWatch software reveals the rows

extend 100,000 square miles across six different states.

These patterns not only cover a huge part of the country,

but also, as I look back in time,

I can see that these patterns were here decades ago.

NARRATOR: The giant rows of trees first appear on

maps of the Midwest during the 1930s,

providing a clue to their extraordinary history.

The 1930s area haunting memory for people

that live in this part of the world.

HEIMLER: What we find when we look at the historical record

is that these trees were planted to stave off

a severe natural disaster.

NARRATOR: The disaster has its origins

70 years earlier in the 1860s,

when President Abraham Lincoln signs the Homestead Act,

offering anyone a 160-acre plot of public land

in the Midwest for a few dollars.

Wave after wave of people take the bait,

turning more than 80 million acres of native prairie

into farmland.

If there's one thing that's in every American's

blood from the beginning of the nation,

it's they wanted to push west.

And so something like 500,000 families, in a mass exodus, took

the government up on this, went out,

and settled in the Midwest.

[cannon blasts]

NARRATOR: During World War I,

yet more prairie is converted to crops as farmers answer

the call to win the war with wheat.

There's this desperate need for food from Europe, for

the rest United States,

and it's a real boom.

But with every boom, there's a bust.

NARRATOR: When the conflict ends, wheat prices plummet,

forcing desperate farmers to tear up yet more prairie to

grow extra crops.

And worse is to come.

In the early 1930s, one of the largest droughts in

1,000 years set in upon this part of North America.

That drought caused all of the tilled land

to essentially dry up and degrade.

NARRATOR: With no deep-rooted prairie grass

left to hold it in place,

winds lift the bone-dry soil skywards,

creating apocalyptic dust clouds 10,000 feet high.

The result is what's called the Dust Bowl.

RUBEN: People were shoveling dust like it was snow.

The eroding soil created these colossal,

hellish dust storms called black blizzards that would

block out the sun for days at a time.

HEIMLER: It was truly massive in scale.

It actually enshrouded the Statue of Liberty,

and ships at sea in the Atlantic Ocean

were covered with dust.

NARRATOR: The suffocating dust fills

the lungs of the farmers and their families,

killing around 7,000 and making half a million people homeless.

With the Midwest facing economic collapse,

President Theodore Roosevelt hatches a plan that gives rise

to the vast rows of trees in the image.

Roosevelt's first idea was to plant a huge swath of trees

1,000 miles wide

that stretched all the way from the Canadian border

to the Mexican border.

The trees would theoretically create a buffer so that

the wind couldn't pick up these storms,

and the tree roots would keep the soil in its place.

NARRATOR: But Roosevelt's plan was astronomically expensive

and would take 12 years to implement.

There was no way that was gonna happen,

but why not, instead,

just try to be a little more minimalist about it,

and that's what they did.

RUBEN: The idea was that whole series of these smaller walls

of trees would go around individual farms,

creating what was called the Shelterbelt.

NARRATOR: The so-called Great Plains Shelterbelt project

mobilizes thousands of laborers made

unemployed during the Great Depression,

who plant 200 million trees across the Midwest.

RUBEN: The project turns out to be an enormous,

unprecedented success that not only blocks the dust storms

but also returns fertility to the land.

HEIMLER: It's hard to remember another time in history when

the federal government intervened in such a decisive

and successful way.

NARRATOR: Eight decades later, the remnants of this

audacious plan remain, revealed from the skies.

RUBEN: It's amazing that for all of our technological advances,

the best idea to fix this was just planting a lot of trees.

And who knows? These weird linear forests might still

be visible hundreds of years from now.

NARRATOR: Coming up, the mutant elephant killer.

This could potentially jump across the species barrier

into humans.

NARRATOR: And journey to the center of the Earth.

It looks more like it belongs in sci-fi

than on our planet.

NARRATOR: A NASA Earth observation satellite scans

the 6,000-square-mile Okavango Delta in northern Botswana.

This vast wetland system is a sanctuary for

more than 2,000 species of plant and animal.

Yet in May 2020, scientists conducting an aerial survey of

the region discover that this oasis of life has become

a place of death.

SCHUTTLER: This is really shocking.

There are dozens, even hundreds,

of dead elephants.

NARRATOR: The grisly scene continues for mile after mile.

More than 350 giant carcasses litter the ground.

It doesn't look like any predators attacked them.

These look like full-grown, healthy elephants,

and they're just laying there, dead.

You can also see that their tusks are still intact,

which is very strange.

Normally the tusks are removed, because

poachers have gone after these elephants.

Whatever killed them is something unseen.

And that, to me, is even more scary.

NARRATOR: Biologists examine the aerial images for

clues to the cause of this carnage.

NELSON: The one thing you see is that all of

these elephants are dying near or around watering holes.

So maybe there's something in

the water that's killing these elephants.

NARRATOR: Local newspapers provide

more possible evidence.

We know that villagers who have come into conflict

with elephants have poisoned them with cyanide in the water.

NARRATOR: Over the past 100 years,

the African elephant population has plummeted from

10 million two 400,000.

Studies suggest that the animals have

retained a collective memory of this slaughter,

[elephant trumpeting]

and they're wreaking their revenge on local villagers.

[elephant trumpeting]

They kill hundreds of people in Africa a year.

We are looking at one of the largest land mammals to ever

walk the Earth -- it can easily,

and they do, stomp and gore people.

[elephant trumpeting]

Maybe the carnage that we're seeing has

something to do with the nearby villages.

NARRATOR: Other analysts think toxins are

indeed present in the water holes,

but natural rather than man-made ones.

These water holes have a brilliant color to them,

which leads us to suspect that there may be cyanobacteria

looming in these.

It creates toxins called cyanotoxins

that, in high enough concentration in the water,

will be deadly to anybody or anything that drinks it.

NARRATOR: Satellite images reveal

that prior to the mass deaths,

the Okavango had experienced three years of extreme drought,

concentrating bacterial toxins in

the watering holes into a lethal soup.

Yet there are problems with this theory.

When you look at the images and the surrounding area,

you don't see the carcasses of any other large mammals.

You would see dead giraffes, buffaloes, hippos,

but there's nothing like that, so it can't be poisoning.

NARRATOR: Eyewitness accounts deepen the mystery.

Locals reported that the elephants were walking

around in circles,

looking very disoriented before they collapsed.

This means there could be something neurological,

some sort of impairment going on in their brains.

NARRATOR: Weighing in at around 11 pounds,

elephant brains are the largest of any land animal

and have three times as many neurons as humans.

They can use tools,

have been shown to demonstrate humor,

compassion, and self-awareness and also understand

different languages.

MOSHER: But this also makes them susceptible

to neurological disorders and diseases,

so it could be that something has infected them or affected

their brain in such a way to cause this strange behavior.

NARRATOR: Scientists have identified

several viruses that can attack the brains of large mammals,

such as elephants.

One possible suspect is encephalomyocarditis.

SCHUTTLER: This virus is spread by rodents and rats,

and it attacks the heart,

and then it causes neurological symptoms

and rapid death.

NARRATOR: The virus has never before killed so many elephants

so quickly.

The nightmare scenario is that the aerial images

are evidence of a new strain unknown to science.

SZULGIT: If this large number of elephants died of a virus,

we need to think about the idea that this virus could

potentially jump across the species barrier into humans.

NARRATOR: Diseases that can jump between species, known as

zoonoses, are one of history's greatest killers

From the Great Plague to the Black Death, Ebola to Covid,

they have claimed hundreds of millions of lives.

Today, experts calculate that 60% of

emerging infectious diseases originate in animals.

MOSHER: One thing's for sure.

These diseases are becoming more prevalent,

and it's not good news for anybody.

NARRATOR: Officials continue to hunt for who or what

is killing the giants of the Okavango.

Elephants face huge problems.

Now they're facing a new threat.

So no matter what it is, we got to get to the bottom of this.

NARRATOR: Coming up, the $17 billion treasure hunt.

This is where the Soviets hit pay dirt.

NARRATOR: And decoding Mystery Hill.

Why would someone create this structure out

in the middle of the woods like this?

NARRATOR: June 26th, 2016.

The GeoEye-1 satellite scans a remote town in

eastern Siberia.

This is really one of

the most amazing satellite images I've ever seen.

There's this enormous crater in the middle

of the Earth.

NARRATOR: A hole 1,700 feet deep

and 4,000 ft wide

punctures he town, a wound in the Earth

the width of 15 city blocks.

RUBEN: The hole is so large and so deep,

it said that it can actually suck in aircraft.

It looks more like it belongs in sci-fi than on our planet.

NARRATOR: Analysts study the massive chasm in detail.

KOUROUNIS: Zooming in, we can see these concentric

ridges that lead all the way down to the bottom,

and that tells me that this is likely a gigantic

open pit mine.

NARRATOR: The nightmarish void is a colossal diamond mine,

but it isn't just its scale or city center location that

puzzles experts.

I don't see any activity or machinery being used.

The bottom of this hole is flooded.

That suggests to me that some

kind of disaster has happened here.

NARRATOR: Local media reports confirm that this mine

has indeed become a place of death,

and it's a tragedy that was decades in the making.

The story begins in 1950 when the Communist invasion of

South Korea, sponsored by the Kremlin,

provokes an international crisis.

The Soviets are supplying the North Koreans with MiG

fighter jets, NATO ends up

imposing sanctions against the USSR,

and this forbids the sale of any defense items to

the Soviet Union, and that actually includes diamonds.

NARRATOR: The sanctions are devastating

to the USSR, because it desperately needs industrial

diamonds to help it recover from the catastrophic fallout

of World War II.

RUBEN: If you want to drill for oil or gas,

you need diamond-tipped drill bits.

If you want precision machines,

you need diamond-tipped cutting blades.

No diamonds means they can't rebuild

their industrial strength and therefore their economy.

NARRATOR: The sanctions infuriate Soviet dictator

Joseph Stalin...

...who dispatches expeditions to

locate a homegrown diamond supply.

In 1955, after years of searching,

geologists find promising deposits in the icy wastelands

of Siberia.

KOUROUNIS: But in this part of the world,

it's one thing to know that you've got diamonds in

the ground.

It's another thing entirely to get them out.

NARRATOR: In eastern Siberia, winter lasts for seven months,

and temperatures plummet to minus 40 Fahrenheit.

This place is so cold that oil freezes,

car tires get brittle and break.

They have to use jet engines to fog permafrost

so that it can dig a little bit easier.

On the flip side, when things do thaw out,

it becomes a huge mess.

It's muddy, it's swampy,

the equipment sinks into the ground.

Buildings can sink into the ground.

NARRATOR: Despite these extraordinary challenges,

over the following decades,

the diamond mine becomes the biggest and most productive

on Earth.

This enormous, unsightly hole in

the ground is where the Soviets hit pay dirt.

At one time, this mine was

producing over 10 million carats a year.

I mean, that's just an incredible amount of

precious gems.

NARRATOR: The mine is named Mir, Russian for peace.

Yet much of the $17 billion worth of diamonds excavated

here helps line the pockets

of corrupt officials or finance the Soviet

war machine.

By the 1990s, the mine is deep enough to fit

the Empire State Building inside it with room to spare,

leading to the stories of aircraft disasters that persist

to this day.

There are no fly zones

over this hole, because helicopters that

would fly over it would kind of

get sucked in by air moving down into and out of

this giant pit.

NARRATOR: As the hunt for diamonds goes deeper still,

the miners are forced to dig a six-mile-long labyrinth

of tunnels under the base of the pit,

and disaster strikes.

More than 100 men are working underground when, all

of a sudden, the mine floods, and water traps them.

It breaks through like a tidal wave.

And eight of the miners are actually killed.

NARRATOR: The tragedy brings the Mir mine's epic 60-year

journey towards the center of the earth to an end,

leaving the apocalyptic void visible from space.

KOUROUNIS: After the disaster,

the mine is closed, kind of a watery memorial to those

who lost their lives there,

but also to the rise and fall of the Soviet Union.

NARRATOR: Coming up, did Irish monks discover America?

MORGAN: Maybe they sail up a river in New Hampshire,

and they build this monument to mark their arrival.

NARRATOR: July 12th, 2014.

Eyes in the sky over New Hampshire capture

a pattern in a wooded area far below.

HEIMLER: It's very strange.

In the middle of the forest,

we see -- looks like different lines that are jutting out

in all different directions.

NARRATOR: The mystery symbol's spokes

are each around 2,000 feet long.

BELLINGER: The lines are very straight and symmetrical,

and they meet at a center point.

From an archaeological standpoint, that points

to a ceremonial or a ritual function.

NARRATOR: Images taken at ground level

seem to confirm this theory.

The site is actually a series of

walkways and standing stones that are massive.

It looks like they are concentrated on the east

and the west, so that makes me wonder,

do they mark out some kind of celestial alignment?

NARRATOR: Astronomically aligned stones are not unique.

But this is New Hampshire, not prehistoric Britain.

Why would someone create this structure out

in the middle of the woods like this?

NARRATOR: Local land records dating from 1937

offer the first clues.

They refer to the site as Mystery Hill.

We know that this site was properly examined for

the first time in the 1930s by William Goodwin.

HEIMLER: William Goodwin was an amateur archaeologist,

and he was obsessed with finding evidence in

the Americas of European arrival before Columbus.

NARRATOR: As Goodwin excavates Mystery Hill,

he unearths a series of structures that he believes

predate Columbus by several 100 years.

He claims that some of them resemble ancient Irish stone

huts called clochans,

which were often used by monks.

Goodwin believed that these stones were, in fact,

the last refuge of some Irish monks called the Culdees.

That was an incredible theory,

because what would a group of Irish monks be doing in

New Hampshire?

NARRATOR: The claims are highly controversial,

but further discoveries appear to lend weight to

the idea that this site has an ancient Irish connection.

Of all the finds that are most enigmatic at Mystery Hill,

one of them is a stone granite slab weighing about 4.5 tons.

BELLINGER: It's similarly constructed and shaped to

the stone wedge burial chambers used by the Celts.

NARRATOR: According to most academics,

the first Europeans to reach North America were the Vikings,

led by the Norse explorer

Leif Eriksson during the 10th century.

But what Goodwin imagines, however, is maybe 300 years

before that, the Culdee monks arrive,

and they sail up a river in New Hampshire,

and they build this monument to mark their arrival.

NARRATOR: Legend has it that the first Irishman to reach

North America was St. Brendan in around 512 AD.

While many consider this a myth, tantalizingly,

some Native American religions bear striking resemblances to

Protestant and Catholic beliefs,

and the first North American Vikings referred to parts of

the U.S. as Irland it Mikla,

or Greater Ireland.

HUNT: There are some Norse sagas that

talk about traveling west of Iceland,

where they came across Christians who were baptizing.

Maybe there's an element of truth to these Culdean monks.

NARRATOR: Yet when archaeologists are brought

in to further excavate the site,

establishing a direct connection to

the Culdean monks proves to be impossible.

They find that William Goodwin probably altered some of

the landscape himself,

rebuilt some of the stone structures.

HEIMLER: He said he was putting them back in their

original locations,

but how did he know their original locations?

NARRATOR: Many academics have since dismissed

Goodwin's research at Mystery Hill

and also claimed that the stones were

shaped by farmers in the 19th century.

But to others, the weird site uncovered from

the skies holds more secrets yet to be revealed.

I wish we could put a closer finger on who built this place.

But Mystery Hill, unfortunately, remains a mystery.