5 Mysteries About The Aztecs That Cannot Be Explained

5 mysteries about the Aztecs that cannot be explained. Today, we take a look at these 5 mysteries of the Aztecs that cannot be explained. We don't know why the tunnel under the Temple of the Sun was forcibly sealed with massive boulders 1,800 years ago. As of right now, archaeologists don't know why the deep tunnel under the Temple of the Sun in Cusco, Peru was forcibly sealed with massive boulders one thousand eight hundred years ago. However, there are several theories that have been proposed by archaeologists and historians. One theory suggests that the tunnel may have been sealed to prevent looting or desecration of the temple by invaders or rival factions. Thank you for watching! Thank you to for the background music!