Great Pyramid of Cholula: Mapping the Secret Tunnels
Chapter 1

The largest monument ever built

Chapter 2

A sacred city of pilgrimage

Chapter 3

The day the Spanish arrived

Chapter 4

Exploring the secret tunnels

Ch 4 · Exploring the secret tunnels
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sonia Cholula Pyramid Secret Tunnels

Walking through five miles of tunnels, mapping out the world's biggest pyramid!

Sep 23

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The challenge of adobe bricks

sonia Maintaining a pyramid made of mud and straw is a constant engineering battle.

Sep 23

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Glossary
tunnel (noun)
An artificial underground passage, especially one built through a hill or under a structure. Between 1931 and 1951, archaeologists dug eight kilometers of tunnels to map the Cholula pyramid's inner layers.

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Fun Fact

Secret tunnels: Archaeologists hand-dug over eight kilometers of tunnels inside the Cholula pyramid, creating a massive underground labyrinth that allows scientists to explore without destroying the church above.

Sep 23

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Quiz

Which religious festival brings thousands of pilgrims to climb the Cholula pyramid every September?

Sep 23

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Gossip

Would you dare walk through Cholula's narrow tunnels?

Sep 23

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Quiz

What types of historical remains were found inside the pyramid's core, proving its ancient ceremonial use?

Sep 23

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Quiz

Why did archaeologists decide to excavate the Cholula pyramid using tunnels rather than clearing away the dirt from the outside?

Sep 23

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Quiz

What is the name of the famous ancient stone monument discovered deep within the Cholula pyramid tunnels?

Sep 23

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Quiz

Why are the internal tunnels of the Cholula pyramid highly vulnerable to collapse?

Sep 23

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Quiz

How can modern tourists explore the hidden, ancient layers of the Great Pyramid of Cholula?

Sep 23

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Quiz

During which decades did the primary archaeological tunnel excavations at Cholula take place?

Sep 23

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Quiz

Approximately how many kilometers of tunnels did archaeologists excavate inside the Great Pyramid of Cholula?

Sep 23