Teotihuacan tunnel explored by Mexican robot
Beneath the fabled ruins of Teotihuacan in Mexico, a tiny robot has taken images of a tunnel that has likely been sealed off since 250 A.D.
The robot beamed back images of well-worked blocks and a smoothly arched ceiling, giving hope to the belief that the tunnel will help archaeologists better understand Teotihuacan. The ancient city, best known for the towering Pyramids of the Sun and the Moon, has been a mystery since the Aztecs arrived in the 1300s and found the place abandoned. No image of its rulers have surfaced.
The Associated Press reports: "Rich offerings were tossed into the tunnel at the moment it was closed up, including almost 50,000 objects of jade, stone, shell and pottery, including ceramic beakers of a kind never found before at the site."
The images show that the tunnel will likely be safe for humans to explore it.