The owners of the Caverns of Sonora in Southwest Texas are offering a reward for the return of a national treasure — part of a rare butterfly formation that took shape over thousands of years. Robbed ...

A butterfly’s wing is covered in hundreds of thousands of tiny scales like miniature shingles on a paper-thin roof. A single scale is as small as a speck of dust yet surprisingly complex, with a ...

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SONORA - Officials at the Caverns of Sonora said Tuesday they are hoping for the return of a stolen portion of the site's most well-known attraction, a naturally formed translucent butterfly.