Geography
How Aeolian Processes Shape Star Dunes in Hyperarid Sand Seas
Quick fact
Star dunes are the tallest dunes in the world, reaching heights of over 300 meters—taller than the Eiffel Tower—yet they are built entirely by wind and sand.
Why this is interesting
Imagine a mountain of sand that grows into a star shape, yet never stops moving. How does a desert wind create such a perfect pyramid?