Yardangs
Yardangs form from rock with harder and softer parts.
Strong winds blow sand that chips away tiny bits of softer rock.
Yardangs change shape over thousands of years.
New yardangs are always forming.
Level 3 Module 1: Earth Changes
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Credit: front, Michal Sikorski/Alamy Stock Photo; back, Xinhua/Alamy Stock Photo