
In 2015, a team of archaeologists discovered a large amount of liquid mercury beneath the Mexican pyramid. Mercury has been found in the form of a powdery red pigment called cinnabar in Mesoamerican tombs on several occasions, but finding it in liquid form is extremely rare. Ancient astronaut theorists have suggested that the presence of liquid mercury may have been part of the Aztecs’ propulsion system.
The traces of liquid mercury were discovered by a Mexican archaeologist named Sergio Gomez in three chambers located beneath the Pyramid of the Feathered Serpent at the Teotihuacan archaeological site north of Mexico City. Gomez had excavated the tunnel at the site that opened in 2003 after 1,800 years, and his team discovered three chambers. They also found strange artifacts near the tunnel entrance, including jade figurines, seashells, jaguar remains, and a box filled with carved shells and rubber balls.

The Temple of the Feathered Serpent is adorned with carved snake heads and slithering bodies. Image via Smithsonianmag
Gómez believed that the discovery of liquid mercury could be a representation of the underworld where the dead resided, probably the remains of the kings of Teotihuacan.
The Aztecs called the ancient site of Teotihuacan the “City of the Gods.” It is located about 30 miles (50 km) northeast of present-day Mexico City. There is no record of when the city was built, but it flourished as early as 400 BC and became the most powerful and influential place in the world by 400 AD. It is estimated that between 100,000 and 200,000 people lived in Teotihuacan, who built giant monuments such as the Temple of the Feathered Serpent (Quetzalcoatl) and the Pyramids of the Sun and the Sun Moon.
Mexican archaeologist named Sergio Gómez
An anthropologist at the University of California named Rosemary Joyce says Mesoamericans used cinnabar to create liquid mercury to decorate jade objects and apply it to the corpses of their royal family. There are three other sites in Central America where mercury has been found, but not on such a large scale below the Temple of the Feathered Serpent.
History writes:
The many structures that still exist at Teotihuacan appear to be encoded with advanced mathematical and cosmic principles, and their layout accurately reflects the positions of the planets in our solar system. Modern excavations at the site have revealed discoveries of liquid mercury, mica-coated walls, and strange golden spheres containing unknown substances—all of which would seem out of place in the ancient world. Could these artifacts be the remains of an alien society? Perhaps even an extraterrestrial spaceport?
A graphic showing the tunnel that may lead to a royal tomb discovered beneath the Quetzalcoatl temple in the ancient city of Teotihuacan. Photograph: Handout via Reuters
Mercury is a highly toxic element that humans can be exposed to in a variety of ways. Its exposure can cause headaches, chills, fever, chest tightness, coughing, hand tremors, nausea, vomiting, abdominal cramps, diarrhea, etc. While scientists are intrigued by what was discovered beneath the Aztec pyramid, ancient astronaut theorists believe that the mercury found in the temple of Quetzalcoatl may have a direct connection to the feathered serpent god who descended from the sky.
In Ancient Aliens season 11 episode 4, theorists discussed the possible reason behind the availability of liquid mercury on a large scale beneath the ancient Mexican pyramid.
Swiss author Erich von Däniken said: “Liquid mercury was not only found in Teotihuacan, according to ancient Indian texts, but was once part of the propulsion system that extraterrestrials used for their flying machines.”
According to Professor Shivanandam of Sri Chandrasekharendra Saraswathi Viswa Mahavidyalaya (Sri Chandrasekharendra Saraswathi University, Kanchipuram, India), around 7,000 years ago, people in India knew how to create Vimanas (flying machine) to traverse the sky and also used a technology that NASA is still trying to harness today.
There are references in ancient Vedic texts that mention Vimanas that could fly in air, water, and land. They mention various types of propulsion, including mercury propulsion. Many legends say that the Nazis studied these ancient Sanskrit texts to build their flying machine.
Professor Shivanandam writes:
“NASA’s planned future spacecraft engine uses mercury bombardment units powered by solar cells. The mercury propellant is vaporized, fed into the thruster’s discharge chamber, converted to ionized plasma, and accelerated through small openings to exit the engine at speeds between 750 and 1900 miles per minute. But so far NASA has succeeded with only half a pound of thrust, which is inadequate. But 108 years ago S.B. Talpade, a Sanskrit scholar from Bombay, was able to use knowledge of Vaimanika Shastra to produce enough thrust to lift his spacecraft 5,000 feet into the air.”
Giorgio Tsoukalos suggested that mercury in a chamber of the Feathered Serpent’s pyramid may represent the presence of physical craft there at some point. He added what would happen if the Feathered Serpent were actually a spaceship.
A similar case of mercury can be found in Shaanxi Province, China, where there is a burial site of 8,000 life-size terracotta warriors and horses. Researchers have been unable to climb the massive underground structures due to high levels of mercury writing from the time of Qin Shi Huang. Like the Aztec story of Quetzalcoatl descending from the sky, the Chinese have a legend of Qin Shi Huang’s ancestor, the Yellow Emperor, descending from the sky on a dragon. The dragon is believed to have been a spaceship that could cover great distances in a short period of time.
According to an ancient astronaut theory, the Aztecs and Chinese received hidden secrets from mercury that allowed them to create a river of mercury for aliens or their Gods.