Do you think it not likely that that structure and similar were built with a knowledge we just no longer have? Seems like I read somewhere we've lost the knowledge to build tbe SR-71 Blackbird, and that's just within our lifetime, not thousands of years.
Maybe an easier example, try finding someone who really knows how to install drywall with a smooth finish. Or, even your own field of expertise, do you not see a time in the not too distant future that that become a skill that is lost?
I take it by we, you mean the people of recorded history. The knowledge still exists in some forms, or the knowledge that still exists doen't necessarily contain the specifics as to how these places were constructed. There are ancient cultures, or civilizations that say these things were there when they got there. Some say they were built by the older gods. It isn't only the Bible that mentions giants. The American Indians talk about red-haired large statured cannibalistic people here. The wear on a lot of the megalithic stuff points to being far older than anything the anthropologists say people were capable of doing at the time they were built. Archaeological digs are shut down if they start finding things that don't fit the current Darwinian theory. They say "we" were hunter gatherers 10,000 years ago, but look at the age of Gobekli Tepe. And I think they are only dating it by the age of the material it was INTENTIONALLY buried in.
They can't date stone. No one has any idea how these stones were cut ,shaped, moved and put into place. People are shouted down and their careers destroyed by the mainstream academia, intelligentsia for saying or showing things out of the party line. Artifacts disappear. Highly respected main stream professional people actually have been caught or admitted to destroying artifacts. That includes painting over, or covering in some manner, depictions that fall out of, again, what the mainstream says is the truth.
They insist on Darwinian evolution. They have no hard evidence to prove it. It is still only a theory. There is evidence that points to something else. Something they don't want us to know about. Why?
What if there are texts, hidden by certain societies, secret societies, that tell a much better story of our history. What is in the Vatican? What do the other secret societies have? What if there are texts that greatly amplify the Bible? I think it would be in the interest of certain of these groups to keep it to themselves. Because it would lay bare their lies and deception. Everything is about control.
I don't know what your religious beliefs are. Aaaannnd I don't care, that is up to you. But say there was an ancient civilization of people and a different race coexisting(or not) 12,000 years ago. One that is far older than that. 12,000 years ago the planet gets hit by a comet, or an asteroid. Or a series of them. It causes the ice age to end--a global flood. The devastation is so severe it wipes out most of everything that as here. Some people survive. They try to rebuild. But there arent enough of them to accomplish much. Perhaps the ones who are left don't have the combined skill set to rebuild much. The people who were picking the cotton may have been the ones least likely to survive the tremendous devastation. So now there is no one who knows how to pick the cotton. They don't even know how to grow it. And their civilization dies out. But the knowledge they do have they hand down. And the world slowly rebuilds itself. Drags itself out of the mud. There comes a point in the new civilizations where some of the handed down knowledge becomes relevant. People have again learned how to plant the cotton, grow the cotton, pick the cotton, and process the cotton. People with the old knowledge show up and say Hey look, we can build a machine that will process the cotton. Another that will make things out of that cotton. And Bang! Instant "civilizaton". There is evidence to something like that happeninng in a sense. Do you understand what I mean? The tales of the "Atlantean" survivors.
This subject, its truth, is the same for me as the subject of UFOs. I wonder, in the 4.5 billion year history that there weren't other people here. A long time ago. Way before anything, or anyone, I am talking about now. They developed technology to a point they could reach the stars. Then something happened, maybe an asteroid strike, or war, wiped things out. They come back to find everything gone, or they know it is gone and don't come back until later. Just to check. Or they help out, or are merely in contact with the new people. Then disaster strikes again.
Now maybe they are coming back again. Us visiting us. But the place has so far gone to Hell they really don't want to have anything to do with us.