Hundreds of mysterious golden-coloured orbs have been found buried in a hidden chamber deep beneath the Temple of Feathered Serpent in Mexico.

The discovery was made by archaeologists from the Mexico National Institute of Anthropology and History, who admit they have no idea what the spheres are for.

Hundreds of mysterious spheres have been discovered beneath the Temple of the Feathered Serpent, in the pre-Hispanic city of Teotihuacan, just 30 miles from Mexico City

According to archaeologists from the Mexico National Institute of Anthropology and History, the spheres would have appeared to be made of gold because they are covered in jarosite – a bi-product of the oxidisation of pyrite, also known as Fool’s Gold

Infrared scanners found the location of the chamber and the orbs. Archaeologists have no idea what the spheres would have been used for, although believe they may have been involved with religious rituals

The team from the Mexican Institute have been using the robot for months to explore the tunnels under the celebrated temple, also known as the Temple of Quetzalcoatl.

Explorer: This robot may have made a momentous discovery in a 2,000-year-old tunnel in Mexico

The was the first image transmitted by the robot deep under the ancient temple

The social structure of Teotihuacan remains a mystery after nearly 100 years of archaeological exploration at the site

The remote control vehicle is equipped with a video cameras and a mechanical arm to clear obstacles out of its way as it maneuvers through the tight passageway

Tourists look on at the archaeological area of the Quetzalcoatl Temple about 37 miles north of Mexico City

This map shows the chambers of the tunnel, found beneath the Temple of the Feathers Serpent, as plotted by the laser scanner. Archaeologists were only expecting to find one chamber, but the robot discovered three hidden rooms

No depiction of a ruler, or the tomb of a monarch, has ever been found, setting the metropolis apart from other pre-Hispanic cultures that deified their rulers.

Archaeologist Sergio Gomez from the National Institute of Anthropology and History explains the developments to the media

The robot is seen near the entrance of a tunnel in the archaeological area. After months of exploration it might have made a momentous discovery