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Did Aliens Build the Pyramids?

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With interests in science and nature, the author explores topics from a unique and sometimes controversial perspective.

Is it possible that ancient aliens may have helped the Egyptians build the Great Pyramid of Giza?

Is it possible that ancient aliens may have helped the Egyptians build the Great Pyramid of Giza?

Aliens and the Egyptian Pyramids

The theory that aliens from another world may have helped build the Great Pyramid of Giza in Egypt might explain how some of the most amazing and mysterious engineering feats in human history were accomplished. Moving massive stone blocks, apparently quarried from many miles away, and assembling them into something so colossal and precise seems like an insurmountable task even today.

How did people manage it so many thousands of years ago without the use of modern construction techniques? Logically, it appears the ancient Egyptians must have known something, or someone, that we don’t.

Some say only access to advanced technology would have allowed them to create stone structures, some with blocks weighing in the neighborhood of 70 tons, with such perfect mathematical alignment.

Then again, maybe we aren’t giving them the respect they deserve. The ancient Egyptians were awfully smart, so maybe they could well have built their own darned pyramids with no help from extraterrestrials.

Of the Seven Wonders of the Ancient World, not only is the Great Pyramid of Giza the only one still standing, but it was already almost 2,000 years old when other cultures began to build their wonders. Were the Egyptians of antiquity really that much more advanced than everyone else, way back then?

Those who subscribe to ancient astronaut theory have more reasons than the complexity of pyramid design to think that aliens may have had a hand in ancient Egypt. Is there enough evidence to conclude that visitors from another planet have been here for thousands of years, guiding and influencing the advancement of humanity?

Or, were the ancients far more advanced than we realize, and has some important information been lost through the ages?

The Great Pyramid consists of over 2 million individually cut blocks.

The Great Pyramid consists of over 2 million individually cut blocks.

How Did They Build the Pyramids?

Most experts agree that ramps of some kind were used to get the blocks into position, but the configuration of those ramps remains unknown. Some think several long ramps from the ground to the work area were constructed and modified throughout the building.

Others think the ramps would have spiraled around the outside of the pyramid, and still, others think the pyramids may have been built from the inside out.

One ancient account suggests the blocks were lifted into place using some kind of fulcrum mechanism that allowed a team of workers to move them with relative ease.

As for dragging the blocks along the ground, some speculate that either round timbers or a kind of lubricated slipway may have been used to make them easier to move. The Nile River was almost certainly used to transport the blocks great distances on barges.

So, looking at the methods above, any combination of those techniques, as well as many still to be thought up, could account for how humans may have built the pyramids. It may not have been easy, and it may not have been fun, but with a whole lot of hard work and a little gentle encouragement from the Pharaoh, it was certainly possible.

Why Do People Think Aliens Built the Pyramids?

The task of building the pyramids seems so monumentally difficult that some people the ancient Egyptians must have had help. Most of the blocks that comprise the Great Pyramid of Khufu are solid limestone and granite. The limestone blocks were likely taken from local sources, but the granite blocks, some over 70 tons, were hauled from a site over 500 miles away.

How the heck did a civilization that didn't use the wheel move these things to the site, and when they got them there how did they put them into place? This is a subject that has been pondered and debated through the ages.

Sumerian Aliens and the Anunnaki

In ancient Mesopotamia, beginning somewhere around 4,000 BC, there was a fertile region called Sumer and a people we refer to as Sumerians. These folks, like the Egyptians, were pretty with it for the age in which they lived. They had advanced knowledge of mathematics and architecture and created some interesting art that still survives to this day.

Because of some of the things they left behind, we know the Sumerians revered gods they called the Anunnaki. And not only the Sumerians; apparently other cultures in Mesopotamia knew of these deities as well. These days, the Anunnaki are at the center of a great deal of debate regarding ancient aliens, and what exactly the ancient people knew.

Much of this stems from the work of Zecharia Sitchin. Back in the 1970s, after interpreting and studying ancient Sumerian texts, Sitchin realized they revealed stunning information about the origins of the human race. He then wrote a bunch of books where he put forward his theories.

Sitchin believed the Anunnaki originate from Nibiru, a rogue planet that takes thousands of years to orbit the Sun. The Anunnaki who came to Earth were working-class aliens, sent here to mine gold to bring back to their homeworld.

When they rebelled against poor working conditions, the decision was made to genetically modify prehistoric humans (Homo erectus) by incorporating Anunnaki DNA and creating a new slave species. In the blink of an eye, Homo sapiens was born (that’s us).

As you can probably imagine, many have found an issue with Sitchin’s revelations, and his interpretation of ancient texts. But others have stood behind his work and believe they have found further evidence to support it.

According to those who back ancient astronaut theory, evidence of alien visitation is all over the place if you know where to look. Religious texts, art, and architecture of the ancient world are packed with direct references to extraterrestrial visitors from another world.

Much of this evidence is in the eye of the beholder, but even setting art and Sitchin's theories aside, one interesting puzzle remains: How did the human race go from living in clans and hunting with spears to building massive pyramids based on complex mathematics and astronomy in the blink of an anthropological eye without some kind of outside influence?

Pyramid Facts and Theories

Surely if aliens had been here they would have left evidence of their presence. The proof may be in the pyramids themselves. It’s easy to think of the pyramids only as giant block buildings, but in reality, they are much more than that. Even more amazing than their construction are the hidden details of their structure.

For one thing, the sheer magnitude of the project alone hints that humans would have struggled to complete it. It’s estimated that it took 20,000 workers about 20 years to build the Great Pyramid of Khufu.

At first, that might sound about right, until you realize that there are about 2.5 million blocks in the pyramid, which means, that if crews worked 10 hours per day, a block had to be put in place every couple of minutes. That’s not considering moving ramps around and all the other stuff that must have gone into construction.

Looking at it this way, it seems like a little help from extraterrestrial technology would have been welcome.

Ancient Pyramids and Astronomy

The Great Pyramid of Khufu was built to very precise alignments. It is said the pyramid is aligned to true north to an accuracy of 3/60th of a degree. And, at the time it was built, it was likely aligned exactly to true north, as true north shifts over time.

The Great Pyramid is the only pyramid with air shafts, and in ancient times those shafts would have aligned with specific stars important to ancient Egyptian religion. Nobody knows for sure what these shafts were for, but theories include spiritual reasons, the use of the pyramid as an astronomical observatory, and even the idea that the Great Pyramid may have been some kind of alien power plant.

The Great Pyramid appears four-sided, but it is actually eight-sided, with four concave faces. Why? Some experts say this is only a structural design. It’s important to remember that the face of the pyramid we see today was not its finished face, as the “casing” blocks that would have adored the surface have worn away or crumbled over time.

Still, the Pyramid of Khufu is the only pyramid to feature this design. Why weren’t other pyramids built this way? Some researchers speculate the design may have an astronomical function and have come up with calculations over the years that correlate the eight sides of the pyramid to important phases of the calendar year.

Orion Correlation Theory

Some researchers say the three largest pyramids reflect the alignment of the stars in Orion’s belt. Given the information above, this probably isn’t a coincidence. This is called the Orion Correlation Theory, and it gets even more interesting.

According to the theory, the entire layout of the pyramid region, the Nile River included, was intended to match the alignment of the Milky Way Galaxy. But here’s the kicker: When researchers look back at the constellations and how they would have appeared to earthly observers over centuries past, the age of the pyramid region appears to date back to around 10,500 BC!

Could the pyramids, or at least the layout of the region, really be that old, and what kind of civilization could have configured this back at a time when most humans were still hunting mammoths?

It’s hard to imagine that ancient humans, living over 12,000 years ago, would have possessed the knowledge or technology to build such elaborate structures. So, could they have had help?

Inside the Great Pyramid there are air shafts, passages and chambers, and some researchers believe secret chambers still to be discovered.

Inside the Great Pyramid there are air shafts, passages and chambers, and some researchers believe secret chambers still to be discovered.

Why Are There So Many Ancient Pyramids Around the World?

Egypt isn’t the only location where you’ll find huge, impressive pyramids. Pre-Columbian South American cultures built pyramids on the other side of the world. Ancient Mesopotamians Sumerians built pyramids. Even some Native American cultures had pyramid-like structures.

Why and how did so many diverse cultures from different areas of the world find it necessary to build similar structures? We can come up with a handful of answers for this.

  1. Pyramids are simply a sturdy, universal design. Pyramids symbolically point skyward, with a wide base on earth and an apex in the heavens. It’s not a great stretch of the mind to understand why this might be important to various peoples throughout history. It would not be surprising that multiple cultures would reach the same conclusion in isolation.
  2. People traveled around the world in ancient times. This idea is almost as interesting as extraterrestrial involvement. Is it possible that ancient South Americans traveled to Egypt, or vice versa, and spread their ideas and culture? If true, this would rewrite the history of our world.
  3. Aliens were involved. If beings from another world influenced the ancient Egyptians, certainly they wouldn’t have stopped there. They may have contacted other civilizations at the same time, or later in history.

Whatever the reason, the presence of ancient pyramids at different locations around our planet is certainly intriguing. However, like the other pieces of the puzzle, it stops far short of proving alien involvement.


What if the Egyptian pyramids really do date back to around 10,500 BC? Would that mean the same aliens that had a hand in shaping ancient Mesopotamia helped erect these massive structures? Could it mean they have a purpose aside from serving as tombs? Even if they date to a more widely acknowledged 3,000 BC, how did humans gain the knowledge to create such precise, elaborate and massive designs so quickly?

The answer may lie in a Neolithic invention we still benefit from to this day: farming. Before farming became widespread, humans lived in smaller groups and moved around a lot more. For 200,000 years, few hunter-gatherers had the need to build anything permanent, much less on a grand scale.

Once people started growing crops they stayed in one place, and villages and cities started to form. This meant more manpower for construction, more people getting together to share knowledge and ideas, and more time where things like mathematics and astronomy could be studied.

It’s not hard to imagine, in an environment that’s suddenly so conducive to the expansion of knowledge, that the human race would make huge advancements in only a few generations.

After all, in less than a couple of hundred years we’ve gone from the horse and buggy and the telegraph to planes that can break the sound barrier and advanced computers like the one you’re looking at right now.

It’s important not to underestimate the abilities of the ancients. The world, and human culture, are a lot older than we tend to think, and our ancestors were surely capable of amazing feats. Perhaps some of their ways were lost over time.

Or, perhaps they had a little help from alien visitors.

What do you think? Did aliens build the pyramids?

Your Opinion

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.


Baba on June 30, 2020:

I agree with james Trentadude

Connor waldron on April 07, 2020:

What point would there be for aliens to build the pyramids anyway

brian from uk on December 15, 2019:

Personally i beleave theres a lot of historical facts withheld from the history books because either they refuse to beleave they had help or that mankind would panic in some way we all have our beleif systems i have an open mind set myself

Maestro on December 14, 2019:

Egyptians claim the great Pyramid was built in 22 years, that equates to a block in place like every so many seconds apart, if that time frame is correct they absolutely had help. Also look at some of the pharaohs on the hieroglyphics; if they stood up they were double the height of normal humans. Some hieroglyphics talk about space battles with Horace, Osiris. They have modern airplanes/helos on hieroglyphics. Also look at the Dendera bulb, a huge light bulb that lite up the pyramids with cords leading probably to a generator, the evidence is overwhelming, I could go on and on.

brian from uk on November 13, 2019:

And yes they certainly helped in building the pyramids lets face it them days if you saw something coming down from the sky you think they were gods as per perceptions and belief s were different then these gods that helped build the pyramids were really extraterestrial beings

brian from uk on November 13, 2019:

Yes aliens,exist we are also alien thats why they check on us some times to see how were doing but it mostly done by non verbal means as they are highly telepathic i suppose they are our progenitors and we are there children

Banzi on November 12, 2019:

if the Dogon people of Mali could see a star that was not visible to the naked, without any modern technology, that should tell you how advanced the ancients were. We were lied to, and the same people that spread those lies are the bloodline of those who are running the show now, and they have all the missing pieces of the puzzle.

Jules on June 09, 2019:

Aliens (if they exist) did not build the Pyramids, surely the aliens would have used much better material for starters. Ancient Egyptians built the pyramids, the first structure dates back to the 2nd dynasty if you look at all the pyramid-like structures you can follow their progress but today's experts still have a lot of things wrong. They will continue to get it wrong until they listen. The pyramids still have secrets, only facts and not fiction will uncover the secrets. I have studied all of the Egyptian pyramids, they are fascinating structures and they deserve full respect and every pyramid has stories to be told.

Landyn on April 08, 2019:

yeah they probloy walk amoung us but are human eys cant see

brian from uk on February 18, 2019:

I think i meet an alien at a computer fair i was with a friend at the time this one stall they were giving away a new type of operating system on a floppy disk there two guys there the one seemed to have a long forehead and blond hair at the time and very tall, i thought funny looking fella i said to me mate at the time did you see that guys long forehead my mate seemed mesmerised by something else with a distant look in his eyes, oh really good for him. I heard they can walk amongs us

James Trentadue from Madison, WI. on February 18, 2019:

Absolutely the offspring of fallen angels.

FA on February 16, 2019:


yip ;oun cheong on February 05, 2019:

aliens must be involved and the timing is much older than it is said to be.

What about the crystal beneath the waves in the Bermuda triangle. This must have been built before the continents moved and send the pyramid below the waves. So pyramids must have been older than we thought

Johann Ziska from USA on September 25, 2018:

I'd say JJ has the best explanation for the knowledge to build pyramids, if you decide to take away human ingenuity. Let's not even get into the timeline, that can get quite messy.

JJ on September 17, 2018:

I believe they were given knowledge from the fallen angels. They shared many things with humankind, that they knew as celestial beings. You probably think that's crazy but no crazier than aliens

Rob on August 08, 2018:

This article most be old, 70 tons is small compared to others around the world as well as all the other structures that date back a few thousand years ago. Thats if dating is right. A lot more going on then we know since , it seems every few weeks new discoveries are un-earth.

Deborah Minter from U.S, California on June 28, 2018:

Fascinating article!

Hybrid 6869 on February 11, 2018:

even expert architects of today say they wouldn't know how to build a giant pyramid like the one built at Giza. how would anyone have been able to visualize building something like that out of the blue without advanced astronomical and mathematical knowledge that suddenly just appears out of nowhere?? even modern technological progress suggests assistance by extraterrestrials or some Satanical entity...

Richard Abbey. on November 01, 2017:

Those big stones some of which weighed 70 tons, supposedly built by the Egyptians, is utter nonsense. They

were built by a far more intelligent race of people from outer space. Not built 3,000 years ago, more like 10,500 years ago. These people from outer space would have come here with their plethora of wisdom having known the secret of anti gravity to move those very heavy blocks of stone in place. The Egyptians were never good builders, history shows this in full. The height of the Pyramid (481 feet)is almost exactly 1/1,000,000,000 of the distance from earth to the Sun (480.6 billion feet. All of hypothesis by archaeologists, guess work only. The Phinx built with the head of a lion originally, not a Pharaoh's head, that doesn't fit the rest of the lions body. No evidence of who built those pyramids, but there is evidence of UFO's. I have seen 4 here where I live in Jersey channel islands out over the channel. This story was in our local newspaper with a phot0 of them. The Egyptians did not have the tools to do this kind of heavy work, copper tools only, but these people from space did have the right tools and the know how to move then in place. No way, are we alone in such a vast universe!

Jay C OBrien from Houston, TX USA on September 26, 2017:

Remember, the stones are from poured concrete and not cut. Giant stones did not have to be moved. This was proved by a French chemist.

I believe there was an ancient High Tech human civilization who built the pyramids and other monuments. I call these people Atlanteans. The Atlanteans were mistaken to be Gods or angels in ancient scripture/ texts.

Colin on September 24, 2017:

Well been interested in the pyramids if Giza for a long time,actually got to visit them in 2004,amazing twice the size of any other pyramid in Egypt.Which in my estimation were rulers trying to copy Giza as I reckon they were there first.Why is there no text writings in the pyramid of giza? or artefacts found,everything just brings up more questions.Several people have tried replicating bringing small 1 ton stones on barges and it didnt work, for 10 ton stones you would require something as big as the Queen Mary to carry them,as I say more questions than answers

Freya143 on September 18, 2017:

Does it really make sense that humans could move over 70 tons of solid stone over hundreds of miles without modern technology placing each stone is a specific spot 2/60th of a degree. It seems suspicious people!! I mean is it so hard to believe that maybe we aren't the only ones in the universe. What about the anunnaki. If you don;t already know what that is I highly recommend researching it and the delicasephalic skulls.

john on June 02, 2017:

very good script and enjoyed reading it,but the hitch is the conclusion,we the human race is capable enough to handle it,since we have evolved or developed couple of decades earlier as you said.

having said that can any one of the genius,developed human point out how they could have done it?!?!?!?or built it?!?!?Make a miniature of it,try out.then conclude yes we didn't get any help.

cryptid (author) from USA on January 04, 2017:

@Paul: In theory: they used stone because stone is here is mass quantities. All they had to do was quarry it. The technology is in the design, not the materials. Good point, though.

Paul Taulbee on January 03, 2017:

My thing if Aliens built the pyramids, why di they use stone. with all this admanced technology wouldn't they had utilized some other worldly materail? Wouldn't they have left some of their electornics or somthing form their advanced superior technology? ah, truth is we are alone and all those stars galaxies just light up the sky for a good view.

Sciencelover13 on November 03, 2016:

Interesting theories, but I want more scientific proof.

Rose17 on November 03, 2016:

I'm not sure what to believe. We don't have a lot of evidence that humans built the pyramids, but we don't have evidence that aliens did either. But I am also a big believer in the possibility of something being real until it has been proven wrong. If anyone can find solid, clear evidence for either side, then I would love to see it. I really like science, and science is normally fact, but I'm always open to new theories. If we didn't accept the theory of gravity, imagine what we would still be trying to figure out!

AsianCuber on November 03, 2016:

I do agree with you TheDragon'sFantasy but you have to keep in mind that we used to think that we could use mirrors and blodd to write on the moon. And yes i got it from a website like this one.

TheDragon'sFantasy on September 18, 2016:

I am pretty sure there smart enough to do it themselves honestly,i mean they had the EXACT same brain power that we do today,they just didn't have the materials to make electronics like cranes,trucks and so on.PLUS they were probably a lot stronger than we are today.

Avinash on August 15, 2016:

Awesome article. After reading the article and all the comments, I don't know what to say but surely I will dig deep into this myself.

Paul Grant on June 18, 2015:

I believe that the purpose for why the pyramids were built (not how ) will go a long way to explain why people would spend so much time even constructing a pyramid and so I maintain unless the pyramid ( or pyramids ) had a multi functional purpose other than a tomb why go to all the trouble. I do have my theories but no evidence currently to support them.

James Trentadue from Madison, WI. on November 29, 2014:

After "the great flood" of the Bible God it also states that He (God)scattered the people to all four corners of the Earth, and confused their language because the Bible states; " With the same language nothing would be impossible for the people of the earth." I believe it was a very knowledgeable and debase time, The true beginning of what we can know existentially. Before this period it is more speculative. Unless the people wrote on stone or (we believe our dating technology which has been proven wrong many times), we have no first hand history.


Jay C OBrien from Houston, TX USA on November 29, 2014:

Why don't we of the modern era build a pyramid of the same type and dimensions and see how much it costs? Compare to the ancients.

prasetio30 from malang-indonesia on November 28, 2014:

I don't think so. I think the people in the ancient era who built the pyramids. But until now, the pyramids still become a mystery and the Alien as well. Nice topic and I like it. Thanks for writing and sharing with us. Voted up!


cryptid (author) from USA on November 28, 2014:

Interesting points, Austinstar. I suppose only the ancients know the truth!

@Jay C O Brien: I'm becoming more and more interested in giants lately. Fascinating stuff.

Jay C OBrien from Houston, TX USA on November 26, 2014:

There is a great book on giants, "The Ancient Giants who ruled America," by Richard L. Dewhurst. It is a collection of newspaper articles from the 1800's. Giant bones were sent to the Smithsonian who denied their existence. I would trust many local newspapers over a large political entity.

Lela from Somewhere near the heart of Texas on November 26, 2014:

Have you actually seen the pyramids? I have been to Chichen Itza in Mexico's Yucatan. My first thought when I saw it was that these Mayans did not build this. They are only 5 feet tall on average. Why would they build giant things? They build their grass houses the same way as they do today. They sleep in hammocks. The Mayans then and now do not need all of these huge stone structures. Without a reason to build them, why would they? The pyramids don't seem particularly religious either. I can only imagine travellers from the stars came and designed these things.

cryptid (author) from USA on November 26, 2014:

Thanks Austinstar. I agree: There definitely seems to have been some important secrets that have been lost to time.

Lela from Somewhere near the heart of Texas on November 25, 2014:

Well, if you substitute aliens for angels, it might explain how they "came from the sky". I think that someday, we will have a perfectly explainable reason for giants and the pyramids and Gobekli Tepe. Humans today think they are so smart, but sometimes, I think we have actually lost a lot of knowledge.

cryptid (author) from USA on November 13, 2014:

Fascinating stuff, JT! Thanks for posting your thoughts!

James Trentadue from Madison, WI. on November 12, 2014:

I have another theory. The wheel wasn't invented until about 3500 BC.

These guys are saying that the pyramids were built 8500 years ago. I don't trust efficient dating technology, but for the sake of argument lets say they are correct. The ancient Egyptians didn't even have the wheel! How advanced do you think could be?

The pyramids are so advanced in their precision that we couldn't even duplicate it today. That's the mental aspect of it.

Physically we today could not place 2,5000,000 stones without error to line up with such precise measurements that Nasa working with its best scientists to put them together could not duplicate. Are we to believe ancient Egypt was that advanced when we in America with the best equipment in the world cannot duplicate the feat!

Egypt today would have gone backwards into a time warp.

Zachariah Sitchin has the same theory interpreting the evidence. The only thing is that he labels the players and events differently.

If you substitute Aliens for Angels, Samaritans for the fallen race of Nephilim, and when they saw the same space ship that Elijah (spinning wheels)saw in his writings it sounds real close to the same theory. One secular theory, the other Biblical.

Gen 6 says that angels fell from heaven and had relations with women. Further study reveals in the book of Enoch (not in the Bible)that these "Nephilim" as they were called had angelic abilities roamed the earth and had offspring.

There are many accounts in legend and folklore including the "Fe Fi Fo Fum I smell the blood of an English man" giant.

( Not sure about the beanstalk but the story had to reach the English psyche somehow- just saying.)

In Some Native American Folk Lore like "The Hopi" saw 20' tall men running with buffalo under their arm on the plains in North America. I think it might have been the same people David fought when he fought Goliath. Those same people may have been the "Giants" in the land before the Israelite crossed over the river Jodan. Every folk lore and legend in mostly all cultures has an insight into this phenomenon (the giant people).

There is also evidence both "out" and hidden. Bones were dug up and hidden away from the public in the Smithsonian Institute that show 15'-30' skeletal remains taken from the Indian burial grounds in the Ohio River Valley.

The documented proof from 10'-30' skeletons come from Steven Quayle who has studied this for 40+ years.

So it is not as far fetched as you might think that the Bible is actually true. As a history book the Bible shows itself to be almost infallible to even to the non-believer.

The Bible just has more recorded events that add up to the same conclusion.

Nice article! Lots of room for mind expansion.


cryptid (author) from USA on November 03, 2014:

Interesting thoughts, Jay!

Jay C OBrien from Houston, TX USA on November 02, 2014:

First, recently some German scientists discovered the shafts are blocked with doors and the shafts do not penetrate the exterior of the building. Therefore the shafts could not be a site line to stars.

Second, a French chemist has found polymers in the stones indicting the stones of the Great Pyramid were poured natural concrete.

Third, horizontal weathering on the pyramids indicate they were at least partially submerged.

Fourth, I propose the Atlantian theory. This theory holds that an advanced civilization existed which built the pyramids (and other structures) and then ended in a catastrophe. (See Toba Catastrophe Theory). Egypt was a refuge from the catastrophe. There were hi-tech and low-tech civilizations existing at the same time (much as there is today).

cryptid (author) from USA on August 12, 2014:

LOL! I hear what you're saying Linda! For the record, my vote went to the Ancient Egyptians!

Linda Sarhan from Lexington KY USA on August 12, 2014:

I like the varied viewpoints. Having close ties to Egypt myself, I can attest that it was built by Egyptians using simple applied physics. Tell an Egyptian otherwise and them are fightin' words. haha. ;)

cryptid (author) from USA on January 31, 2014:

Thank you Sheila! I tend to believe ancient cultures were capable of more than we give them credit for as well. Still, its fun to ponder! :-)

sheilamyers on January 31, 2014:

Great hub! I really like the way you point out the information for both sides of the argument. I don't believe in the alien theory and believe the ancient people could've done the work all on their own. Do I have proof? No. But as you pointed out, there are many things we don't know about the ancient people. Every time I see a show on TV where the hosts and other people claim aliens had to have helped, I wonder what people a thousand years in our future are going to say about us. Now, we believe Einstein developed the theory of relativity without much in the way of outside influences. Those future generations may not see a genius, but someone who got help from aliens. What? There were no geniuses alive back then to design and build the pyramids? Sure there were.