The Neolithic Metro is what archaeologists began to call the network of ancient tunnels under the Cordillera. At first, the entrance to the dungeons seemed like an ordinary cave, but then inside, traces of nature were lost: traces of heavy equipment were found on the walls of the corridors.
Research into the caves beneath Zion Park in Utah has been going on since 2005. The almost perfectly rounded tunnels go down for kilometers.
The length of the canyon leading to the descent is 24 kilometers and is indeed somewhat reminiscent of a passage for heavy equipment.
Ribbed marks running along the entire length of the walls can also indicate this. Of course, over thousands of years, water could have pierced these grooves, but there are simply no large bodies of water nearby. In addition, in one of the walls, archaeologists discovered an object most similar to a modern spring. They haven’t decided to take it out yet – the artifact has probably become too fragile over time.
And this “Neolithic metro” is not the only evidence in the world of the existence of heavy equipment among the ancients.
It is worth remembering at least the drilled holes in the walls of the pyramids – their diameter and depth are clearly too large for manual work.
However, most discussions of ancient heavy equipment are based only on theoretical justifications.