Ancient Astronaut theorists propose that Teotihuacan, the mysterious first-century AD metropolis northeast of Mexico City, may have served as an extraterrestrial spaceport or colony. The show points to several unusual discoveries: liquid mercury found beneath the Pyramid of the Sun, mica-lined walls, and golden spheres containing unknown substances. David Wilcock and James Lincoln discuss mercury's properties as a superconductor, suggesting the "literal river of liquid mercury" found at the site could have generated electromagnetic fields for levitation technology. The episode also examines Aztec origin myths recorded by Spanish chronicler Geronimo de Mendieta, which describe 1,600 gods emerging from a giant flint knife that descended from the sky near a seven-chambered cave—possibly the cavern beneath Teotihuacan's Pyramid of the Sun—to create humanity.
Mainstream archaeologists recognize Teotihuacan as Mesoamerica's earliest major city, predating the Maya by a century and housing nearly 100,000 people at its height, though its builders' identity remains genuinely unknown. Mercury and mica do appear in Mesoamerican contexts: mercury held ritual significance across many ancient cultures, and mica—available from local deposits—was valued for its reflective properties in ceremonial architecture. The episode offers compelling viewing even for skeptics because Teotihuacan's origins truly are enigmatic, its mathematical and astronomical alignments are documented, and the recent archaeological discoveries of unusual materials raise legitimate questions about the technological knowledge and trade networks of this sophisticated early civilization.