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Mysterious Stones Found In Colo. May Have Been Ancient Musical Instruments

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A set of rounded stones discovered in the high desert near Colorado’s Great Sand Dunes National Park are believed to be ancient musical instruments known as lithophone

Brad Turner

Researchers thought the rounded stones found in the desert — clearly shaped by human hands — were used to grind nuts or seeds. But archaeologist Marilyn Martorano says they are actually lithophones.

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