Worlds beneath our feet
Chapter 1
The architecture of natural caves
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Chapter 2
Rivers and life in total darkness
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Chapter 3
Hidden cities carved in stone
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Chapter 4
The modern world under the streets
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YOUR GOAL
Master of Worlds beneath our feet
Ch 3 · Hidden cities carved in stone
misslily We're living deep down in the stone (deep down in the stone!) Roll the big wheel and lock it down (lock it down, yeah!)
Fun Fact
Derinkuyu doors: The tunnels of Derinkuyu were secured by massive, circular stone doors weighing up to 500 kilograms that could only be opened from the inside.
Quiz
What did the underground tunnels of Paris originally serve as before becoming catacombs?
Gossip
Which of these historical stone structures is the most impressive feat of engineering?
Quiz
What mineral was being mined when Colombian workers began carving the Zipaquira Cathedral?
Quiz
Approximately how many people could the ancient underground city of Derinkuyu shelter during invasions?
Quiz
In which modern-day country is the ancient multi-level underground city of Derinkuyu located?
Quiz
What is the name of the largest cliff dwelling in Mesa Verde, featuring 150 rooms?