Archaeologists discover underground pyramid in Bolivia

Tiahuanaco
(Image credit: Twitter/Ancient Origins)

The ancient site of Tiahuanaco in western Bolivia has yielded plenty of finds for historians. It was once the capital of a Pre-Columbian empire, Tiwanaku, that peaked between 500 and 900 C.E. Now, archaeologists have announced another amazing find from the site: an underground pyramid.

Not much is known about the pyramid yet — the archaeologists found it with ground-penetrating radar, but they haven't begun excavating the area. The radar data also revealed "underground anomalies" that may be monoliths, EFE reports.

The Bolivian government has announced that further excavations will be held at the site over the next five years, starting this summer, to explore the pyramid as well as the possibility of monoliths.

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The site was once home to one of ancient America's most important cities, Ancient Origins notes, and the city spanned roughly 231,000 square miles. Other finds from the site have included sculptures, palace ruins, and stone monuments.

Tiahuanaco has been classified as a UNESCO World Heritage Site since 2000, but the newly discovered pyramid proves that the site still has plenty of secrets to reveal. The archaeologists are expected to announce initial finds from research into the pyramid later this year.

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Meghan DeMaria

Meghan DeMaria is a staff writer at TheWeek.com. She has previously worked for USA Today and Marie Claire.