Archaeologists in Mexico have uncovered a remarkable green serpentine mask at the base of the Pyramid of the Sun in Teotihuacan. This 2000-year-old artifact, believed to be a ceremonial offering ...

What they found is that the density of the earth in the pyramid is at least 20 percent lower on one side than on the other. “I can use slightly moist sand to make a sandcastle.

The Pyramid of the Sun was built approximately in 100 CE. It is under continuous research as archaeologists and historians continue to understand more about it.

A major problem in Mesoamerican prehistory is whether the gigantic Pyramid of the Sun at Teotihuacάn in the Valley of Mexico was constructed in a single building operation as has long been assumed by ...

In 2011, INAH archaeologists announced they had found a 400-foot-long tunnel at the base of the Pyramid of the Sun, which is still being studied. Mexico’s government has been excavating the ...