Why did the ancient people of Teotihuacan build a massive pyramid over a cave?
In short: Rising 75 meters above the Avenue of the Dead, the Pyramid of the Sun remains one of Mesoamerica's most imposing structures. While its name comes from later Aztec visitors, the true purpose of this monument—and the mysterious man-made cave hidden beneath its center—continues to challenge modern archaeological understanding.
Constructed in two distinct phases starting around 100 to 200 AD, the Pyramid of the Sun dominates the Teotihuacan landscape. Its final dimensions reached 225 meters across and 75 meters in height. Originally, the structure was finished with lime plaster and adorned with vibrant murals featuring jaguar motifs, stars, and snake rattles, though these decorative elements have long since vanished. The pyramid was strategically positioned to align with the mountain Cerro Gordo and specific solar events, a layout that influenced the orientation of the city's central urban grid.
Beneath the pyramid lies a significant cave system. Archaeologists, including Rene Millon in 1959 and Ernesto Taboada in 1971, have explored these tunnels, which were once considered natural lava tubes but are now often viewed as man-made. These spaces were likely sacred, representing the 'wombs of the Earth' from which various ethnic groups were said to have emerged. The cave appears to have been a focal point that determined the location of the pyramid itself, serving as a site for ritual offerings and potential royal burials long before the massive stone structure was erected over it.
The identity of the deity venerated by the pyramid remains elusive, as the temple that once stood atop the structure was destroyed by natural and human forces before formal archaeological study could occur. While some early theories suggested the pyramid was built by slave labor, modern researchers argue that the high level of craftsmanship and the site's cultural importance point to a motivated workforce. Today, scientists continue to investigate the interior using muon detectors, hoping to uncover further chambers and clarify the complex relationship between the city's architecture, its subterranean shrines, and the religious life of its ancient inhabitants.
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- Summary by Intellect · source: Pyramid of the Sun
- Also: Pyramid of the Sun
- Also: Wikidata — Pyramid of the Sun · CC0
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