Spheres Pyrite encrusted found under Pyramid

spheres, covered in pyrite, or fool's gold, are interesting on their own but the fact that they were found deliberately buried under a pyramid in the ancient city of Teotihuacan, once the most populated city in the world, has led some to call it an "unprecedented discovery."

Anthropologists deduce that the Teotihuacans knew they were not going to survive and mysteriously abandoned the city in 700AD. Some say that may have been due to a famine or due to some kind of invasion.

Mexico's National Institute of Anthropology and History has posted photos of the discovery on its website.

Before the Teotihuacans disappeared they hid the orbs at the Temple of the Feathered Serpent in tunnels so deep that it took scientists years of planning before they could even dig

According to Gizmodo, wireless robots are currently scouring the area for any new discoveries with researchers still having three chambers left to dig through, News.com.au reported.

Scientists are still in the dark about what the orbs may have been used for but possibly they were used for religious purposes to present to the gods.

The orbs are yellow, which comes from jarosite, which forms as pyrite oxidizes.

When the orbs were used, they might have been glittering balls of gold.