The Nazca lines are huge (and small) figures drawn in the sand.
Since these lines weren't noticed till we had flight, making the drawings possible to see, many people believe aliens might be involved.
But the lines are not smooth for landings and there is no reason for aliens to leave if they wanted to settle here. So there must be a more terrestrial explanation for the Nazca Lines.
Given the lack of rain, simply removing the top soil to expose the rocks beneath was enough to create this ancient desert "art". This post has the breaking news on the Nazca lines plus the full scientific theory for evidence of flight in the Americas at some point (Amazon basin?). We do know that about 95% of the population of the Americas died when the Spanish introduced small pox by their arrival and cities in the Amazon were decimated and quickly overtaken by the forest... so alot more probably remains to be discovered in the Amazon and its surrounding areas. Such as a culture that increased its technological achievement to an unheard of level before disapearing into history again.
Giant drawings found near Nazca Lines in Peru desert
Archaeologists using drones have discovered 25 ancient geoglyphs thought to have been created by the Paracas culture in southern Peru.…
NY Times: More Than 140 Nazca Lines Are Discovered in Peruvian Desert A team of Japanese researchers combined on-the-ground archaeology with modern technology, including artificial intelligence, to identify the 2,000-year-old images.
The Nazca Lines cover an area of about 173 square miles and are thought to have been scratched into the earth from 500 B.C. to A.D. 500. The shapes are best seen from the air, and many are impossible to discern from the ground.
143 New Nazca Lines Discovered in Peru with the help of A.I. Technology | Ancient Architects
The geoglyphs include humans, birds, camels, cats and other animals and were found between 2016 and 2018. They were identified through fieldwork and analysing high-resolution 3D data and aerial photography. Incredibly, one geoglyph in particular was solely discovered with AI technology, without the aid of humans, making it the first geoglyph discovered by an AI.
A look at how a plane could have developed in the Americas from a colony from Egypt;
Having a culture, or even city, with flying machines would certainly explain the desert art called the Nazca Lines that wasn't noticed till we too had flying machines of our own.
We know there was famine, disease and war in the old world. We also know there was an invasion on barbaric hordes in the ancient world, around 1177 BC, that destroyed the bronze age civilization (probably the result of displaced peoples from areas turned to desert or from floods and other natural disasters or wars etc.). Maybe people from more developed cultures (with pottery, books, boats, ideas etc) fled east, west and over the ocean looking for a more peaceful life? When Persians fled the Greeks into India there was a flowering of sculpture and a new Golden Age in India, Why not somewhere else? We do know there have been many inventions throughout history that were lost and in some cases rediscovered and in some not.
Wikipedia: The Saqqara Bird is a bird-shaped artifact made of sycamore wood, discovered during the 1898 excavation of the Pa-di-Imen tomb in Saqqara, Egypt. It has been dated to approximately 200 BCE, and is now housed in the Museum of Egyptian Antiquities in Cairo. The Saqqara Bird has a wingspan of 180 mm (7.1 in) and weighs 39.12 g (1.380 oz). Its purpose is not understood because of a lack of period documentation.
History.com: The Saqqarra Bird: An Ancient Glider Or Child's Plaything With Accidental Aerodynamic Properties?
Extract from an article on Time.com: Cryptids: The Saqqara Bird
A 1500 year old pre-columbian artifact in the shape of a modern aircraft is tested for flight worthiness.
Full Show: CARS AND PLANES 44M 34S 2007 TV-PG CC Surprising archaeological finds lead historians to new conclusions about the underrated transportation technologies invented by ancient civilizations.
6 Advanced Ancient Inventions Beyond Modern Understanding
10 Remarkable Advanced Ancient Technologies Ahead Of Their Times
5 Advanced Ancient Technologies That Shouldn't Be Possible
Top 10 Lost Technologies We Really Could Use Today
It is unclear how advanced technology got in the ancient world, all we can be sure of is that all libraries have been burnt, so all the records are lost and the civilizations that may have flowered into something out of a sci-fi movie, if even for only a few decades or a few hundred years - in our 10s of thousands of years of history - are long gone and even its remains have turned to dust. All that remains are these stone monuments and a few pieces of knowledge and artifacts that have survived through the millenniums of war, migrations and just getting rid of trash.
How can anyone say one culture couldn't have made a plane at some point before falling as all human civilizations or cities have fallen before it. There is still alot more to learn and discover.