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 2 · Rivers and life in total darkness
misslily Deep in the shadows of the underground streams, we find a blind dragon that doesn't need dreams.
Fun Fact
Olm longevity: The blind olm salamander is so stationary that scientists once tracked an individual that did not move for seven years.
Glossary
stygobite (noun)
An aquatic animal that lives in subterranean water systems and is adapted to complete darkness. The blind olm is a subterranean salamander inhabiting the pitch-black waters of Slovenia's Postojna Cave.
An aquatic animal that lives in subterranean water systems and is adapted to complete darkness. The blind olm is a subterranean salamander inhabiting the pitch-black waters of Slovenia's Postojna Cave.
Quiz
Which of the following describes the water in the lower section of the Puerto Princesa Subterranean River?
Quiz
In what year was Romania's completely isolated Movile Cave first discovered by humans?
Quiz
For up to how many years can the blind olm salamander survive without eating any food?
Quiz
What chemical compound powers the ecosystem of Romania's isolated Movile Cave instead of sunlight?
Quiz
Where is the Puerto Princesa Subterranean River, which flows directly into the sea, located?
Quiz
What is the geological term for a surface river that vanishes underground into a sinkhole?