Mini-robot discovers three chambers in Mexico's Temple of Quetzalcoatl
|Visitors look on at the archaeological area of the Temple of Quetzalcoatl, near the Pyramid of the Sun at the Teotihuacan archaeological site, about 60 kilometesr (37 miles) north of Mexico City [Credit: Henry Romero/Reuters]|
|A robot used to explore ruins is seen near the entrance of a tunnel [Credit: Henry Romero/Reuters]|
The investigation's immediate goal is to find a tomb where the city's former rulers are thought to be buried.
Declared a UN World Heritage site, Teotihuacan reached its peak between 250 and 500 AD when it had a population close to 150,000 residents to become the sixth largest city in the world after Constantinople and Alexandria.
The city has an area of two square kilometres, although scientists believe at it's height, the metropolis reached 20 square kilometres.
Source: Reuters [April 22, 2013]