A temple bigger than a city block was hiding in plain sight for over 1,000 years.

Published this week in Proceedings of the National Academy of Sciences, the study analyzed 788 obsidian artifacts excavated from the Templo Mayor of Tenochtitlan, the main temple and core of the ...

The artifacts examined in the study were uncovered during excavations that took place over decades from the main Aztec temple of Tenochtitlán, called the Templo Mayor, in what is now Mexico City ...

The artifacts examined in the study were uncovered during excavations that took place over decades from the main Aztec temple of Tenochtitlán, called the Templo Mayor, in what is now Mexico City.

- Mirsa Islas/Courtesy Proyecto Templo Mayor, INAH The artifacts examined in the study were uncovered during excavations that took place over decades from the main Aztec temple of Tenochtitlán, called ...

The artifacts examined in the study were uncovered during excavations that took place over decades from the main Aztec temple of Tenochtitlán, called the Templo Mayor, in what is now Mexico City.