Darvaza Gas Crater-Turkmenistan
Kimberley Diamond Mine (Big Hole) - South Africa:
Bingham Canyon Mine:
The World's Deepest Water-Filled Sinkhole - El Zacatón Cenote:
Mirny Diamond Mine - Siberia:
Diavik Mine - Canada:
Sinkhole-Guatemala:
Great Blue Hole - Belize:
Udachnaya Pipe - Russia:
Chuquicamata - Chile:
Well Of Chand Baori:
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