Original subtitles

[Narrator] Massive stone temples

believed to have been constructed by giants.

A mysterious megalithic city

that rises out of the ocean.

And a colossal pyramid

thought to predate the Great Flood of the Bible.

? ?

All around the world, we see the magnificent ruins

of cultures that existed thousands of years ago.

And even today, archaeologists still don't know

how sites like the pyramids of Giza,

the temple at Baalbek,

and even Stonehenge were built.

For ancient astronaut theorists like me,

these places are even more compelling

because the local mythology claims that

they were constructed with otherworldly assistance.

Perhaps one of the best examples of extraterrestrial engineering

can be found atop a vast plateau in the Andes Mountains,

where dozens of megalithic blocks

appear to have been carved with laser-like precision.

[Narrator] The Inca Empire, Peru. 1549.

High in the Andes Mountains,

Spanish explorer Pedro Cieza de Le�n

is searching for the Inca capital of Qullasuyu.

Just south of Lake Titicaca,

at an elevation of nearly 13,000 feet,

he comes upon extraordinary ruins

covering roughly two and a half square miles.

It is the ancient settlement of Tiwanaku.

De Le�n spends many months investigating the site,

and writes in his chronicles that Tiwanaku

contains impressive stone walls,

idols of human figures,

and great doorways.

He also writes about an area

south of the main archaeological site

called Puma Punku, or "gate of the puma."

It features stone blocks so enormous

he does not understand how they could be moved by humans.

And they are carved with a precision that,

according to de Le�n, could not be accomplished

with the tools available to the Inca.

[Tsoukalos] Pedro Cieza de Le�n says

that the local population, which was Inca, told him

that this place was not built by the Incas,

but it was built hundreds of years before.

If the Inca themselves have said

that it was not the Inca,

well then, who were the pre-Incas?

And there we are confronted

with a gigantic question mark.

[Narrator] What the giant blocks formed is completely unknown,

and nearly five centuries after its discovery by de Le�n,

Puma Punku remains as mysterious as ever.

[Barnhart] It's out in this

really open, high plains.

Most of the stones in Puma Punku are huge.

The biggest is 130 tons.

There's another one that's 85 tons.

Even the small ones are multi-ton.

So these are huge.

The platform Illitica is in the center of Puma Punku,

and it's, in fact, the foundation.

So it consists of enormous slabs of red sandstone

that were brought from a quarry

eight miles to the west over two mountain ranges.

So, how that was accomplished, I have no idea.

[Caroline Whitehill] Another really fascinating

aspect of the Puma Punku site

is the distribution of these blocks.

Some of them are still upright, in the position

that they were originally constructed in.

Most of them are strewn about.

It looks like you're in a child's playroom

and blocks have just been knocked over from

some sort of a structure that was built.

[Hugh Newman] It looks like it's been destroyed

by a kind of tsunami or something.

It's got mud piled up everywhere,

giant stones sticking out of it at crazy angles.

[Narrator] It remains unknown

whether the structures of Puma Punku

were destroyed by a cataclysm

or if the construction project was simply abandoned

before it was finished.

But the roughly 150 megalithic blocks

that can be found at the site today

reveal that the builders possessed astounding

stoneworking abilities.

[Barnhart] Puma Punku has these megalithic blocks

that are perfectly cut,

that all of their angles

are completely right angles.

There's these ones in particular called H-blocks

that look like a big capital H.

They have kind of, uh, fade lines going in

where they carved the same shape

in a couple of different layers,

deeper and deeper into the stone. And its precision

is really mind-boggling.

[Travis Taylor] There are grooves that are cut

with perfect 90-degree angles.

It looks like they were so precise

that they were done with modern-day

milling machine tools.

[David Childress] There's stones there, too,

that have a lot of drill holes

and saw cuts and things like that in them.

[Taylor] It's an

amazing piece of engineering that is beyond its time.

[Tsoukalos] Predominantly, we have

two types of stone at Puma Punku,

and that is red sandstone

and gray andesite.

They have found tools made of copper

and of iron and bronze at Puma Punku.

And with those tools, you can absolutely cut the sandstone.

However, you cannot cut the gray andesite blocks

with bronze or with copper or with iron.

What's interesting, too, is that the stone blocks that we find

at Puma Punku- the surface is as if

you're touching glass.

It is perfection.

[Narrator] In 1903, Arthur Posnansky,

an Austrian engineer, explorer

and amateur archaeologist,

traveled to Puma Punku, which, by that time,

was located in western Bolivia.

Posnansky began the most thorough study of the site

ever conducted.

[Foerster] Arthur Posnansky was born

in Vienna, Austria in the 19th century,

and in his early 20s he moved to South America.

But very soon after that he became fascinated by Puma Punku,

and spent almost the rest of his life

studying and researching that location.

[Tsoukalos] Arthur Posnansky lived

and researched at Puma Punku

from 1904

until 1945.

He was there for 41 years,

and he absolutely fell in love

not only with the landscapes there,

but also with that culture

that put a spell on him,

and it was his biggest siren call.

When speaking with the Aymara elders,

they speak very, very fondly of the archaeologist Posnansky,

because he respected them and he respected their culture.

And he talked to them about what they knew about these sites.

And one of the places that they're in agreement

is that the site is much older than it's believed to be

by mainstream archaeologists.

[Narrator] Mainstream scholars believe

the site was originally constructed

about 1,500 years ago, but Posnansky proposed

that Puma Punku was much, much older.

By examining the structures and what he believed

was their original alignment with the stars,

he dated the ruins to 15,000 BC.

[Taylor] Arthur Posnansky suggests that

Puma Punku would line up with stellar objects

about 17,000 years ago.

The local indigenous people- the Aymara-

uh, they actually

have a mythology that Puma Punku

has been around for maybe as much as 17,000 years.

[Narrator] The Aymara people have occupied

the area of modern-day Peru and Bolivia

for at least 800 years,

and lived alongside the Inca

when Pedro Cieza de Le�n arrived at Tiwanaku

in the 16th century.

Both the Inca and Aymara told de Le�n

and other Spanish chroniclers

not only that Puma Punku was built long before their time,

but also that it was the work of the gods.

[Erich von D�niken] The locals said,

"It was not us who made this.

It was the gods who did it in one night.

The gods who descended from the sky."

So, normally, every culture says,

"Oh, yes, we did it. We-we had the knowledge.

We were strong enough." In that case-

Puma Punku- the locals say

"It was not us who made these platforms.

It was the gods."

Which gods? Extraterrestrials.

In the middle of the Mediterranean Sea,

the tiny island nation of Malta

is home to some of the best examples

of what ancient astronaut theorists

consider to be extraterrestrial engineering.

The megaliths of Malta are some of the oldest in the world,

and many weigh more than 50 tons.

But what's even more intriguing are the local legends

that claim that these sites were built by beings

who came from the stars.

[Narrator] The Republic of Malta.

Situated across the island nation's

122 square miles

sit the remains of seven megalithic sites.

These include the two temples of Ggantija...

...and Skorba.

These marvels of ancient construction were all built

with the same type of Maltese limestone

which was extracted from local quarries.

[Schoch] The fact that they were moving around

these multi-ton blocks, building these temples

and actually, when you look at them,

moving the blocks within very, very narrow confines...

Okay, it's one thing to move a block

out in the open that's multi-ton,

but to then place it systematically

and very carefully next to another one,

next to another one, next to another one,

to form these beautiful temple structures-

that's a real engineering feat.

[Narrator] While there are some researchers who believe

that Malta's megalithic temples

could be as much as 12,000 years old,

mainstream scholars believe they were created

no earlier than 3600 BC,

during what is known as the Neolithic Age.

And they also theorize that the massive structures

were built by a human culture that used

only primitive stone tools.

[Tsoukalos] Archaeology suggests, at the time,

we barely invented the wheel.

We barely had tools,

there was no known language

and we had no writing.

Well, let's step back for a moment and think about this.

From an evolutionary and technology, uh, perspective,

that makes no sense because

you begin with simple,

you continue bigger, bigger and then biggest.

But you start small.

What we have in the case of the Maltese structures

is that the biggest are the oldest.

So that makes zero sense

from a logical perspective

because there was no evolution in technology.

The archaeologists- they agree with this.

[Jason Osequeda] To construct similar temple

after similar temple,

um, with the same material,

without evidence of writing,

shows a high degree of communication.

And we find terra-cotta models,

in fact, of temples, and

archaeologists have suggested, perhaps,

that this is an early architect's rendering.

This is more evidence of the high level

of thought and ability that went into

the construction of these temples.

[Narrator] No written records have ever been discovered

to explain who built the megalithic temples in Malta.

However, local traditions of the Maltese people

have offered a stunning possibility.

They claim that the massive structures

were built by a race of giant beings

who came to Earth from the stars.

[Jonathan Young] There's a story

that a meteorite came down from the heavens

and turned into a goddess, a giant

named Sansuna.

And the locals, of course, were terrified of this giant.

But at a place called Ggantija she started building a temple

and moved stones much larger than any human could ever move,

and assembled this structure that was so massive

it remains to this day,

still a place of mystery,

still a giant's construction.

[William Henry] When you see these cyclopean stones,

some of them weighing as much as 50 tons, you can appreciate

why we have the story of this giantess, Sansuna.

[Narrator] The local legends of Sansuna

may sound incredible to some.

However, in the 17th century,

a Maltese nobleman named Gian Francesco Abela

claimed to have found forensic evidence that these legends

may have been based in fact.

In the early 1600s, Gian Francesco Abela

was living on the island of Malta,

and he actually wrote about the fact that giants

were involved in the construction of these sites.

And one of the reasons he wrote this is because

he said he found bones, skulls and even giant teeth

all across the island

and there were other reports of them coming forth at this time.

[Narrator] In order to investigate the local legends

connecting giant extraterrestrial beings

to the massive structures on Malta,

in 2022,

ancient astronaut theorist Giorgio Tsoukalos

traveled to Malta's oldest megalithic structures,

the temples of Ggantija on the island of Gozo.

There, he met with Frans Van Avendonk...

I'm Giorgio. Pleasure to meet you.

...an expert in Maltese history

who has lived on the island since 1991.

-Look at this, I mean... -Gigantic.

It is gigantic.

"Ggantija" means "the giant goddess,"

and it makes sense why,

because right now, I feel like an ant.

We are so small, and especially when you're right next to it.

[Van Avendonk] It's very impressive.

[Tsoukalos] And, uh, in my opinion,

still a massive question mark.

[Van Avendonk] There are still questions, yeah, definitely.

What can you tell us about the dating?

Well, when it was excavated- because we don't

talk about discovery, it was always visible-

people thought it was a Phoenician temple.

-Okay. -Much later, they realized

it must have been prehistoric, so it was put

in the 2000s, before Christ.

Then it moves back to the 3000s. Now we're saying 3600, at least.

Technology has improved,

different ways of looking at things,

so therefore, they're getting older.

They were built much earlier

than we thought before.

[Narrator] When viewed from above,

the two adjacent temples of Ggantija

are designed with large apses resembling a cloverleaf.

Each housed an altar, and artifacts suggest

a wooden roof covered the entire temple.

Many of the stone blocks stand 20 feet tall,

and some weigh in excess of 50 tons.

Is it possible that we've lost some type of masonry knowledge?

Because you could create it using smaller stones.

Clearly, this required planning.

-It required logistics. -Yes.

[Tsoukalos] In my opinion, master builders

were at work here,

and mainstream archaeologists are suggesting that

whoever built this did not have any writing.

Well, not only would it require writing,

but you have to have calculations.

-And leadership. -Doesn't last... Exactly.

With the evidence of how old or when it was built,

who built it and how it was built...

-Mm-hmm. -Might be there,

but we haven't found it yet.

I can imagine that people saw this

and thought, "This must have been

-the work of a giant." -Right.

[Osequeda] Throughout the Mediterranean,

you see an association with giants

constructing megaliths. For instance, in Mycenaean Greece,

there's a structure called the Lion's Gate.

Aristotle mentioned that

this construction style was called cyclopean masonry

because of the large stones.

The ancient Greeks figured that only a giant called Cyclops

could have had the strength to move these.

The same sort of cyclopean masonry is present

in the Maltese temples as well.

[Tsoukalos] These stories of giants

have been an integral part

of our entire human history

since the beginning of time.

So, is it possible

that the reason why we have these stories of these giants

is because, at one point, they actually existed?

And the answer to that is yes.

Not every example of extraterrestrial engineering

are gigantic structures.

Sometimes, they're so small

they can fit in the palm of your hand.

Like in the case of a fascinating discovery

under the ruins of Teotihuacan in Mexico,

where archaeologists found

mysterious golden spheres.

[Narrator] Teotihuacan, Mexico.

This ancient pyramid site was once home

to a mysterious civilization dating back

to the first century AD-

a time long before the Aztec arrived in this region.

Since the early 1990s,

archaeologists have been exploring the dozens

of subterranean rooms, tunnels

and pathways that lie below this eight square mile complex.

They've been doing a lot of excavations to understand

the nature and the relationship of the different pyramids.

And they're exploring underneath

the Temple of the Feathered Serpent.

And so they've made some really nice maps

of the pathways and such that are underneath the temple

and exposed caverns in areas that they didn't know existed.

[Narrator] In May of 2013,

researchers working beneath the Temple of the Feathered Serpent

employed a small robot called Tlaloc II-TC

to explore the recently uncovered area.

Inside one chamber, archaeologists made

a curious discovery.

They found more than a hundred gold-colored metallic spheres.

[Andrew Collins] These tiny balls

are probably anything between

an inch to about five inches in diameter.

And what we can say is that

when they were actually put in place,

uh, probably about 2,000 years ago,

you would have had this incredible

shining gallery of lights as you went down it.

[Whitehill] They appear gold, but when you look at them

under chemical inspection, it appears that

that gold color is mineral pyrite.

The Mexican archaeologists

are completely perplexed. They haven't seen

anything like this before.

They haven't seen anything like this

in their explorations of the other temples.

So there's lots of-of questions to be answered, still.

[Narrator] Archaeologists retrieved

several spheres from the chamber,

and when they analyzed them, they were amazed

by what they found.

[Barnhart] The sparkly spheres that were found in Teotihuacan

really are an enigma.

As far as how they were made, men definitely made them.

We have looked at those spheres and they are clay.

They are like sunbaked clay that was then

rolled in pyrite dust.

That's why they have that kind of yellow color.

Why they did it... I don't know.

[Henry] Nobody knows the purpose of them,

why they were made or even who made them,

but the fact that they're there

tells us they are of-of utmost importance

to what went on at the temple.

[Narrator] The golden spheres found under

the Temple of the Feathered Serpent

are a mystery to archaeologists,

but some believe they may be representations

of celestial bodies observed in the night sky.

But ancient astronaut theorists suggest the mysterious spheres

could have served a more profound purpose,

and point to another discovery made in 1906.

[Collins] At Teotihuacan, huge mica sheets have been found

beneath a layer of stone flooring

that were 90 feet

square and they were placed directly on top of each other,

and yet you couldn't see them.

So, they clearly weren't decorative or aesthetic,

they were clearly functional in their use.

So, what were they doing there?

[Tsoukalos] We use mica today in spacefaring technology.

It's a heat shield

for high- very, very high- temperatures.

What is it doing at Teotihuacan?

What's also fascinating is that throughout Teotihuacan

you see burn marks on the walls.

So, at some point, Teotihuacan

underwent a gigantic fire.

Or was it something else?

Was it some type of a blast?

Was it some type of an exhaust?

[Narrator] Curiously, mica

wasn't the only unusual substance

found within the ancient structure.

[Newman] They actually found mercury

under some of the pyramids as well.

So, what does this all mean? Well, Mercury is used

in different electrical components

and it conducts electricity. So, can we suggest that

they were using this for some advanced technological purpose?

[Childress] Mercury itself is-is very special.

It's a metal, it's a liquid, it's a electrical conductor.

Mercury can be used for many, many devices,

all of which are high tech.

So, you have to wonder: what is going on

here at Teotihuacan?

Do these small balls

and the mica and the mercury

and other facets of the pyramid-

are they all working together to create

some kind of electrical device that's doing something?

That would seem to be the case.

[Narrator] Does the discovery at Teotihuacan

of both mica and mercury-

two substances with high-tech applications-

indicate that an advanced technology once existed

in this ancient Mesoamerican city?

One that involved the mysterious spheres

found under the Temple of the Feathered Serpent?

We've often suggested that ancient structures

may have been used as some type

of energy capacitor.

An aeronautics engineer has suggested

that the Great Pyramid of Egypt or the whole Giza complex

may have been some type of a giant power plant.

Well, what if Egypt is not the only place

where they had something like this?

How do you explain an ancient structure

where the walls are built from 20-foot-long basalt columns

stacked more than 30 feet high,

all in the middle of the Pacific Ocean?

For ancient astronaut theorists, this place, called Nan Madol,

is a perfect example of extraterrestrial engineering.

[Narrator] Pohnpei, Micronesia.

Located roughly 2,500 miles northeast of Australia

lie the ruins of Nan Madol.

This 11-square-mile complex

was built out of more than 250 million tons of basalt,

with some blocks weighing upwards of 50 tons.

In 2019,

ancient astronaut theorists Giorgio Tsoukalos

and David Childress, along with

Micronesia's national historic preservation officer Gus Kohler,

traveled to Nan Madol to investigate

this megalithic site.

Also joining them was structural engineer

Dr. Henry Burton.

This thing- it's-it's supposed to be the biggest

of all the stones here.

Henry, do you think you can calculate the weight of this?

Yeah, we can certainly estimate it. Um, I have a measuring tape.

We can estimate the volume. And we know the density.

-So that can give us the mass. -All right, let's do that.

[Burton] Yeah, so, this is about four meters.

All right, here's, uh, the far... corner here.

[Narrator] Using the dimensions and the density

of one of the basalt stone blocks,

Dr. Burton calculates its weight.

Two fifty. Two meters, fifty.

[Burton] All right. So, based on the measurements,

you're looking at a weight of about 54 tons.

-Fifty-four tons? Then... -Yeah.

So, 50 tons, give or take.

And you have one, two, three, four

of those monoliths essentially stacked on top of each other.

At a height of 40 feet.

[Childress] So, Gus, what is, then, the oral history

of moving this stone on the island?

Well, according to the legends, uh,

the stones were flown up there.

[Narrator] For generations,

the people of Pohnpei have told the story

that Nan Madol was constructed by strange visitors

through a process of levitation.

It is this legend that has suggested

to ancient astronaut theorists that Nan Madol

is not only an ancient megalithic structure.

It is also an extraterrestrial one.

So, we have, in the oral traditions,

a story about two brothers.

[Narrator] According to legend, the twin sorcerers

who created Nan Madol were of giant proportions,

much like the legends of Easter Island, where it is said

that giants magically floated

the stone Moai statues into place.

Similar stories involving levitation

are associated with numerous other megalithic sites

like Stonehenge in England,

the Great Pyramid in Giza, Egypt,

the Uxmal Pyramid in the Yucat�n Peninsula

and Puma Punku in Bolivia.

There are other stories around the world

that say the exact same thing-

how gigantic stones

were moved into place as if by magic.

And you have to ask yourself, is there a connection?

Did all of our ancestors receive the same knowledge

from the extraterrestrials?

And the answer to that is a resounding yes.

[Childress] They don't know...

I think they don't know where it came from.

And... But it's-it's not from here, right?

So, yeah, 60% of the stones,

they don't know where they came from.

That's incredible. That...

The 60% is essentially still a mystery, yes?

Huh.

[Narrator] For decades, mainstream archaeologists

have been frustrated by their failure to identify the source

for much of the basalt used in the construction of Nan Madol.

But recently, a growing number of scientists

have become convinced that it came from

a volcanic outcropping located 25 miles northeast of Nan Madol

called Pwisehn Malek.

The unusual formation extends over 400 feet into the air.

And, incredibly, the rock used to construct Nan Madol

appears to have been extracted from the least accessible

part of the mountain: the very top.

But how?

According to the oral history of Pohnpei,

the basalt was taken by what the natives

referred to as a giant bird.

There's one story that says that, at some point,

there were these giant roosters

that lived on top of that mountain.

And this rooster took these basalt blocks

and flew them over to Nan Madol.

Now, monster roosters do not exist.

So, my mind always goes to misunderstood technology.

Machines that were provided by the extraterrestrials.

When it comes to extraterrestrial engineering,

look no further than the Great Pyramids of Giza.

For ancient astronaut theorists, these colossal structures

are the perfect example of how

humans constructed an extraordinary site

with the help of otherworldly technology.

[Narrator] Jerusalem. 2016.

Researchers with the Israel Antiquities Authority

studying the Dead Sea Scrolls make a major discovery.

Using state-of-the-art imaging technology,

they uncover a passage of ancient text

previously unseen by the naked eye.

These researchers have discovered a new passage

in the Dead Sea Scrolls that indicates

that Noah's Ark wasn't in the shape of a ship at all,

but was in the shape of a pyramid.

[Narrator] Curiously, this is not the first time

that Noah's Ark has been depicted as a pyramid.

In the 15th century, Italian artist Lorenzo Ghiberti

created his masterpiece.

A series of ten panels

that depict scenes from the Old Testament.

[Henry] The Italian sculptor Lorenzo Ghiberti

was selected to create the doors going into

the new Florence cathedral, the Il Doumo.

These doors are called the Gates of Paradise.

And something that is very extraordinary about them

is that, in one instance, he shows Noah's Ark as a pyramid

that resembles the Great Pyramid of Giza.

[Childress] Was it possible that Lorenzo, while he was working

for the Church, learned about the true nature

of Noah's Ark and then depicted it in his sculpture?

[Narrator] According to historians,

the Pyramid of Djoser, constructed in 2600 BC,

was the first pyramid ever built in Egypt,

and the Great Pyramid was built 100 years later.

But the dating of the Great Pyramid

and the two smaller pyramids that stand next to it

is a point of major contention, with many researchers suggesting

they were built much earlier.

[Childress] Egyptologists often assume

that the older pyramids are

less well-created and smaller,

such as Djoser's Pyramid.

And that, ultimately, their building got better and better

until they finally built the Great Pyramid

as their final construction masterpiece.

But it may be completely reversed of that,

and that the Great Pyramid, which is by far the best

of all the pyramids, is actually the oldest of the pyramids.

[von D�niken] Two and a half thousand BC,

according to archaeology, humans made the Great Pyramid.

Now, in old writing, especially in the Book of Enoch,

and in the so-called

Hitat, which is a book from Arabian writer,

they say the Great Pyramid was constructed

before the Great Flood.

[Henry] What if the Great Pyramid

existed, perhaps even for millennia,

before the Djoser Pyramid?

Then the Egyptians come along, discover it, and decide,

"Hey, maybe we can make one of those, too."

And that's when they build the Djoser Pyramid.

[Mark Carlotto] Perhaps the-the most similar common motif

or style is the pyramidal shape

that seems to exist throughout the world.

In Egypt, in Mesoamerica, in China.

Giant, earthen mounds in the shape of pyramids.

Why pyramids?

[Narrator] Is it possible that pyramids were built

by cultures all around the world

because they were trying to recreate much older structures

that survived a great flood?

Ancient astronaut theorists say yes,

and some researchers have even suggested

that those pyramids that were built by pre-flood civilizations

represent a form of lost technology.

In his 1998 book The Giza Power Plant,

noted machinist and engineer Christopher Dunn

proposed that the shape, positions of chambers,

and proximity to underground rivers

indicate the Great Pyramids of Giza

functioned as power plants.

[Childress] I personally think that the pyramids

were some kind of energy generators, and

here we have the strange idea that the Ark itself

wasn't a boat-type shaped thing,

but was actually a pyramid.

So, is it possible that whoever built the pyramids of Egypt

was doing so to try to preserve their technology?

One of the oldest structures on Earth

is a megalithic site in Ireland called Newgrange.

What's remarkable about this ancient passage tomb

is not only its age but the mythology

that says it was engineered by an otherworldly being

to be a home for the gods.

[Narrator] County Meath, Ireland.

Here, in the Boyne River Valley,

a large, circular mound rises out of the earth-

the Newgrange Passage Tomb,

built around 3200 BC.

It was constructed with over 200,000 tons of stone

quarried 75 miles away,

and contains one passageway

that leads to a centralized chamber.

[Newman] Newgrange is one of the most important sites

in all of Europe.

It was possibly a stone circle with 36 or 37 stones.

Only 12 of these still remain.

And after that, a huge mound made of stone and earth

was built within the stone circle itself.

Within this, we have a huge chamber,

which is a cruciform shape, or a cross.

It's got some beautiful carvings on the 97 curbstones

that go around the edge as well as on the main entrance stone.

And within the chamber itself,

mainly zigzags and spirals

and, most notably, a triple spiral

at the back of the main chamber within the actual site itself.

[Narrator] Newgrange was designed

to honor the winter solstice,

but according to a book published in 2012

called The Newgrange Sirius Mystery,

the entire mound was also built

to align with the star Sirius A in the night sky.

[Newman] The declination of Sirius is the same

as the winter solstice sunrise moving across the sky,

and through the light box, which is a rectangular area

just above the main entrance, this is where

you witness not only the sunlight coming through,

but also, later in the day,

Sirius light coming through as well.

[Narrator] The Dogon of Mali in West Africa

claimed that their gods came to Earth from the star Sirius B.

Ancient astronaut theorists connect these visitors

to gods with similar names all over the world.

But they also point out an intriguing connection

to Newgrange in Ireland.

In addition to being in line with the star Sirius,

legend says that this megalith was built by a Celtic god:

Dagda.

[Childress] The main god that's associated with Newgrange

is called Dagda. So here, once again,

we have this same word that appears to mean something about

gods coming from Sirius.

[Narrator] The god known as Dagda

was said to be the leader of a group of otherworldly beings

called the Tuatha D� Danann.

[Newman] So, the Tuatha D� Danann

were this renowned fairy race

that arrived, mysteriously, in Ireland

many thousands of years ago.

The supreme deity of the Tuatha D� Danann

was Dagda. Dagda Mul.

And he was a renowned god.

He was said to have built and lived inside Newgrange.

They had very advanced weaponry

and different types of what sounds like machinery.

But also, they taught the high arts of civilization

and they were said to be almost like the shining ones

of the Biblical tradition.

It's almost like a science fiction movie

when you start looking at these ancient Irish myths.

Could Newgrange have once been

an alien outpost on Earth?

It's certainly an intriguing possibility,

and just one of the many examples

of diverse ancient constructions

that defy our current understanding

of just how and why they were made.

From the megalithic temples of Malta

and the precisely cut stones at Puma Punku

to the enigma that are the Great Pyramids of Egypt,

these remarkable creations present possible evidence

of the role extraterrestrial engineering

may have played

in our ancestors' distant past.

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