The Neolithic farmers and herders who built a massive stone chamber in southern Spain nearly 6,000 years ago possessed a good rudimentary grasp of physics, geometry, geology and architectural principles, finds a detailed study of the site.
Using data from a high-resolution laser scan, as well as unpublished photos and diagrams from earlier excavations, archaeologists pieced together a probable construction process for the monument known as the Dolmen of Menga. Their findings, published on 23 August in Science Advances, reveal new insights into the structure and its Neolithic builders’ technical abilities.
They absolutely would have had prior experience if fhe process is complex. Humans tend to have bursts of developing new techniques sprinkled around, but a complex structure would be rhe result of combining existing knowledge in a new way with a few new techniques. They wouldn’t figure a bunch of things out at the same time and build something to last thousands of years. They probably built similar structures that didn’t hold up as well first and learned from it.
Nope. It was aliens.