A schoolhouse made entirely of onyx at El Marmol

(March 19, 2004)

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Huge slabs of onyx ready for transport at El Marmol

(March 19, 2004)

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The main cemetery at El Marmol onyx mine

(March 19, 2004)

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Onyx-covered graves at El Marmol

(March 19, 2004)

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Open pit mine for onyx at El Marmol

(March 19, 2004)

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