First Images of the Interior of Teotihuacan Tunnel Captured by Camera on Small Robot MEXICO CITY.- The first images of the interior of the tunnel found under the Feathered Serpent Temple, in Teotihuacan, captured by a small robot introduced by archaeologists of the National Institute of Anthropology and History (INAH), were presented to the media due to the relevance of the event in the history of Mexican archaeological research. This is the first time a robot is integrated to archaeological exploration in Mexico; a similar devise was used in Egypt 10 years ago to explore a tomb. Tlaloque 1, named after the mythological beings that helped Tlaloc, covered the first stretch of a tunnel that has not been walked for 1,800 years. Images reveal that the passageway built more than 2,000 years ago to represent the underworld, is stable enough to be explored by archaeologists soon.