![Explorers Find Metal Orbs Inside Pyramid](https://hight3ch.com/wp-content/uploads/2013/05/Explorers-Find-Metal-Orbs-Inside-Pyramid.jpg)
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.