

Chapter 1
The mystery of Racetrack Playa
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Answer
Chapter 2
Cracking the cold case
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Answer
Chapter 3
Global glides and dry lakes
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YOUR GOAL
Master of Sailing stones of Death Valley
Ch 3 · Global glides and dry lakes
hank Sailing Stones Death Valley
On Racetrack Playa, stones slowly glide, yeah, moved by ice and wind.
Fun Fact
Extraterrestrial dry lakes: Scientists study Earth's dry playas to understand similar flat basins on Mars and Saturn's moon Titan, which may have once held liquid.
Glossary
playa (noun)
A dry, flat area of land in a desert basin where water evaporates. California's Racetrack Playa is the famous dry lake bed where heavy boulders mysteriously slide across the mud.
A dry, flat area of land in a desert basin where water evaporates. California's Racetrack Playa is the famous dry lake bed where heavy boulders mysteriously slide across the mud.
Quiz
Which of these is a famous dry lakebed in South Africa similar to the American playas?
Quiz
Why do footprints on a wet playa cause long-term damage to the sailing stone environment?
Quiz
Instead of ice sheets, what organic material helps rocks slide in some warmer Spanish lagoons?
Quiz
What is the primary mineral that makes up the white, salty crust of many global playas?
Quiz
What is the main geological difference between Racetrack Playa and Spain's Altillo Chica lagoon?
Quiz
In which European country did scientists discover a similar moving stone phenomenon in a seasonal lagoon?

