Sand dunes usually feel like the quietest places on Earth. Just wind, heat, and endless grains slipping underfoot. Yet in a few deserts around the world, dunes suddenly do something uncanny. They hum, ...
In Southern Colorado, the Great Sand Dunes are alive with the sound of music. The tallest dunes in North America rise above 750 feet — a surreal landscape that sings on scorching summer days. For that ...
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