Mexico uses robot to explore ancient tunnel

The Associated Press November 11, 2010, 9:12AM ET
Mexico uses robot to explore ancient tunnel
By JORGE BARRERA

TEOTIHUACAN, Mexico

The first robotic exploration of a pre-Hispanic ruin in Mexico has revealed that a 2,000-year-old tunnel under a temple at the famed Teotihuacan ruins has a perfectly carved arch roof and appears stable enough to enter, archaeologists announced Wednesday.

Archaeologists lowered the remote-controlled, camera-equipped vehicle into the 12-foot-wide (4-meter) corridor and sent wheeling through it to see if it was safe for researchers to enter. The one-foot (30-cm) wide robot was called "Tlaloque 1" after the Aztec rain god.

The grainy footage shot by the robot was presented Wednesday by Mexico's National Institute of Anthropology and History. It shows a narrow, open space left after the tunnel was intentionally closed off between A.D. 200 and 250 and filled with debris nearly to the roof.

Archaeologist Sergio Gomez says the footage showed the arched-roof tunnel was an example of sophisticated work by the ancient inhabitants of Teotihuacan, which is located just north of modern Mexico City.

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