Mirny Diamond Mine of Siberia
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Great Blue Hole – Belize
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Burning Gates of Turkmenistan
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Kimberley Big Hole – South Africa
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Bingham Canyon Mine – Utah
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Glory Hole in Monticello Dam California
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Diavik Diamond Mine – Canada
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Guatemala Sinkhole
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Chuquicamata Copper Mine – Chile
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Udachnaya Pipe – Russia
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