Inside a 2,000-year-old unexplored tunnel on the Teotihuacan site in Mexico, scientists have discovered, through the use of a robot called Tlaloc II-TC, mysterious metal orbs.
Inside a 2,000-year-old unexplored tunnel on the Teotihuacan site in Mexico, scientists have discovered, through the use of a robot called Tlaloc II-TC, mysterious metal orbs.
