People today always want to ignore the evidence that Neolithic humans were as smart and capable as we are.
So they have to imagine aliens or chariots of the gods or whatever. The answer is less dramatic.
There is always the possibility that during a 400,000 year long ice-age that people would be as smart as the ones in Babel were. Without a fallen angel coming up with 'a plan' I have no bout they were 'not dumb', we are, or there is an effort to show the opposite.
450ft lower oceanic coastline, able to find 'Atlantis' by sailing 'from the Atlantic Ocean' into the med sea and coming to 'this place':
Opium Throughout History | The Opium Kings | FRONTLINE | PBS
3400 B.C.
The opium poppy is cultivated in lower Mesopotamia. The Sumerians refer to it as Hul Gil, the 'joy plant.' The Sumerians would soon pass along the plant and its euphoric effects to the Assyrians. The art of poppy-culling would continue from the Assyrians to the Babylonians who in turn would pass their knowledge onto the Egyptians.
1300 B.C.
In the capital city of Thebes, Egyptians begin cultivation of opium thebaicum,grown in their famous poppy fields.The opium trade flourishes during the reign of Thutmose IV, Akhenaton and King Tutankhamen. The trade route included the Phoenicians and Minoans who move the profitable item across the Mediterranean Sea into Greece, Carthage, and Europe.
1100 B.C.
On the island of Cyprus, the "Peoples of the Sea" craft surgical-quality culling knives to harvest opium, which they would cultivate, trade and smoke before the fall of Troy.
460 B.C.
Hippocrates, "the father of medicine", dismisses the magical attributes of opium but acknowledges its usefulness as a narcotic and styptic in treating internal diseases, diseases of women and epidemics.
330 B.C.
Alexander the Great introduces opium to the people of Persia and India.
A.D. 400
Opium thebaicum, from the Egytpian fields at Thebes, is first introduced to China by Arab traders.
Sumeria as a global place would be the desert belt of the whole earth, aka Summer Area.
In Noah's flood the rain that fell on high hills stayed in place for 5 months, did it fall as 'snow'? The Garden in Ge:2 had a mist, rather than 'seasonal rains', during that same ice-age would 'fog' be 'normal weather'.
No shadows, temp is the same 7/24/360. After the flood, the 'clouds lifted', blue sky appeared for the first time if you lived below 2,000ft above sea level.
When I reference 'tabletop mountain' in South America, it would still be covered mountain glaciers to the height where a few huge slabs were moved from one side to the other by 'sliding them straight across' rather than today where they were lowered to the valley floor, then 'pulled up' up the other side to the same height where they stand today.
Purpose, totally unknown. Snowboard for immortal beings?