In nineteen-fifty, Muddy Waters recorded a song called "Rollin' Stone."

VOA: special.2009.06.21

On a hot Sunday in 1999 three miners find a thin, triangular stone in a muddy Brazilian river.

FORBES: Fracture Lines

Now there is just muddy earth, littered with chunks of stone the size of a man that have been tossed in the air and landed at crazy angles.

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