NARRATOR: According to
ancient-astronaut theorists,
not only are aliens
watching over North America
today but, in fact,
they have been
visiting us for
hundreds and possibly
even thousands of years.
And they claim the evidence can
be found in the strange sights,
structures, and monuments
that lie in every corner
of the continent--
Serpent Mound in
Adams County, Ohio;
the Kivas at Chaco
Canyon, New Mexico;
Bighorn Medicine
Wheel in Wyoming.
Many Native American tribes
say that at these ancient sites
and countless others,
entities that they
call star beings came
down from the sky
to teach their ancestors.
CLIFFORD MAHOOTY: To the
Zuni people and other tribes,
there is a spiritual connection
with the star beings.
They're the ones that actually
rule the universe or the world
that we're on.
If you look at the petroglyphs,
there's a lot of references
to those type of entities.
NARRATOR: According to tribes
like the Zuni and Hopi,
stories of these
otherworldly visitations
exist not only in the oral
traditions passed down
from their ancestors but
also in petroglyphs carved
into rock all across America.
On the Zuni Pueblo
in New Mexico,
there are literally
thousands of ancient carvings
that most outsiders
have never laid eyes on,
and the Zuni claim that
some of these petroglyphs
depict visitations
from star beings.
 There is definitely
evidence that aliens visited
North America in a
distant past, and there
are petroglyphs
throughout this part
of the country carved
by ancient Americans
that depict just that.
What can you tell me about
this petroglyphs right here?
 You know, if
you can see on top
of that where maybe a head would
be, it's kind of eroded off.
But on the next
part of it, there's
four compartments
that look an extension
of something sticking out.
GIORGIO A. TSOUKALOS:
Yeah, almost like legs.
 It could be something
that they saw in the air.
 Isn't there a legend
that beings visited
on top of this mountain?
 Oh yes, on all of the mesas.
 In conjunction with all
the stories of star people
descending from the sky in
fiery shields and things
like this, when I see
a pattern like that,
I always think what if this
is something that they saw
and then they
carved onto a rock?
CLIFFORD MAHOOTY: And a lot
of these are sacred drawings.
They're just not graffiti like
a lot of people say they are.
GIORGIO A. TSOUKALOS: No, never.
 There is no such thing
as that in those days.
Look at the triangle up there.
GIORGIO A. TSOUKALOS: And you've
got the dots around it that
have been carved into the rock.
They remind me like stars.
NARRATOR: Could the ancient
people in this part of America
really have been trying
to depict encounters
with alien spacecraft?
 There are legends and myths
all around the world that
can be interpreted
as having been visits
by extraterrestrials,
and many think
that such stories don't exist
here in the United States.
But the fact is that there
are things in this country
that nobody's even dreamed of.
