Da Vinci mystery: 'Abandoned' angel and Christ discovered beneath masterpiece

Fox News - 08-16

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Experts have used sophisticated imaging technology to reveal hidden drawings of an angel and Christ beneath a Leonardo da Vinci masterpiece. “The Virgin of the Rocks,” located at the National Gallery in London, revealed its secrets thanks to macro X-ray fluorescence technology that identified zinc in the drawings. Infrared and hyperspectral imaging were also used to reveal the hidden figures.