Episode guide
Caves: The Sculptures of Water
Under some hills there are rooms no one built, carved by water one drop at a time. This episode walks into the patient dark where stone grows like icicles.
The science, gently
- Caves form as slightly acidic rainwater dissolves limestone over thousands of years.
- Stalactites hold tight to the ceiling; stalagmites reach up toward them, one drip at a time.
- Deep caves stay the same cool temperature all year, in every season.
Wonder together
- What would you whisper in a room made by water?
- How long would you wait to watch a stalagmite grow one inch? It can take a century.
- What is the darkest dark you have ever seen?
Tonight's calm-down
Caves are proof that gentle things, given time, can carve stone. Nothing is asked of you tonight but one drop of rest after another. Drip, drip, drip, until morning.