Pyramids of Teotihuacan
The pyramids of Mexico, which no one knows who built them. The pyramids of Teotihuacan contain liquid mercury inside them. The mystery of the ancient pyramids of Teotihuacan increased in 2015 when, in the latest discoveries of Teotihuacan made by a group of archaeologists, they contained major inexplicable surprises and turned the issue into an unsolved mystery, even more than it already was. Liquid mercury was discovered at the bottom of the Pyramid of the Sun in Teotihuacan, in addition to a room containing a layer of stone, followed by another layer of mica, then another layer of stone. Liquid mercury was placed there by an ancient civilization for an unknown reason, but it was strange to find caves whose walls were filled with pyrite (a bright golden mineral that can conduct electricity).
In the same space, golden balls of a strange substance were discovered. It is not known how they worked or for what. Liquid mercury, mica and gold balls were the latest discoveries at Teotihuacan in 2015, but shockingly only 10% of the deposit has been extracted. We miss exploring 90% of Teotihuacan, and I am sure that when everything is excavated and investigated, the surprises will be even greater.
It is believed that the big secret of the pyramid is that it functioned (like the Great Pyramid, for example) as a power station. We have not yet been able to decipher the secrets of the pyramids of Teotihuacan or Egypt (Giza). These advanced societies used technology and mathematics, which matched the pyramids and their measurements to maps of the solar system. Those who built Teotihuacan had knowledge of the solar system, something the ancient inhabitants could not have known.
Source: websites