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Singing Sands of Indiana Dunes National Park
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03:59 - 06:03 (02:03)

Indiana Dunes National Park, located 32 miles outside of Chicago, is a unique national park as its sand dunes produce sound known as "singing sands", triggered by the composition of the sand and the wind or even just by walking on the sand, creating a loud, low-pitched rumble or barking sound that can last several minutes.

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