[narrator]
more than 2,000 miles off the coast of Chile,
lies one of the most mysterious places on Earth:
Easter Island.
This tiny land mass
is home to nearly 900 monolithic stone statues
carved out of volcanic rock.
Two thousand five hundred sixty-four miles to the east,
isolated 7,000 feet above sea level,
are the ruins of a mysterious lost city
of the Inca, called Machu Picchu.
And 10,742 miles away,
on the opposite side of the world,
lies Mohenjo-daro,
a site where ancient astronaut theorists believe
a nuclear explosion may have occurred in the distant past.
[thunderous boom]
[narrator]
as discovered by researcher Jim Allison,
these three sites fall in a straight line
around the center of the Earth.
And with just a minor margin of error,
it also runs through a number
of other mysterious ancient sites.
[woman]
we have Nazca.
We have Angkor Wat in Cambodia.
All of these extraordinarily important
powerful, sacred places,
were all built in a straight line.
Now, this cannot be an accident.
This cannot be a coincidence.
[narrator]
the ancient Sumerian city of Ur,
the ruins of Petra, Jordan,
and Persepolis,
the capital city of ancient Persia.
[man]
that seem to line up,
even if there's a minute degree of deviation,
it's never a massive distance from that line.
[narrator]
ancient sites across the globe all follow this line?
What could possibly explain this coincidence?
[man]
because only a people capable of flight
or at least being able to look at maps
would be able to do such a thing.
Could it be because some of those points
were, in fact, places
where our ancestors made contact
with extraterrestrials?
There has to be something important
in the location and the geography,
in the geometry, that indicated to our ancestors
that this is sacred ground,
that this is a powerful place to put these sacred sites.
[narrator]
evidence of extraterrestrial intervention can also be found
by looking at how early humans
aligned their most important sites with the stars.
At the Giza Plateau in Egypt,
the layout of the three great pyramids
aligns perfectly with the belt stars
of the constellation Orion.
Orion's Belt is made up of two bright stars
and a third dimmer star,
which is offset a bit to the left.
[Robert]
Two large pyramids in alignment,
with the third pyramid offset.
It looks like they wanted
to build stars on the ground, if you like.
[narrator]
are the ancient city of Teotihuacan,
in Central Mexico,
the Hopi villages in the American southwest...
and the Thornborough Henges,
a Neolithic landscape complex in Northern England.
Could it be merely coincidence
that so many ancient cultures throughout the world
that presumably had no contact with each other
all built their most important sites
by using celestial alignments?
Look, this is not something
that can be explained away as a coincidence.
[David]
at what we're really seeing,
and understand that there is a worldwide,
intelligent, highly mathematically precise plan
behind these designs.
[man]
are encoded with information,
and that where they sit on the planet
is also part of an intricate code
is a fascinating idea.
And one that we're just beginning to understand.