உலகை மிரட்டும் மோசமான 10 குழிகள்1. Mirny diamond mine of Siberia
2. Great Blue Hole – Belize
3. Burning Gates Of Turkmenistan
4. Kimberley Big Hole – South Africa
5. Bingham Canyon Mine – Utah
6. Glory Hole in Monticello Dam California
7. Diavik Diamond Mine – Canada
8. Guatemala Sink hole
9. Chuquicamata Copper Mine – Chile
10. Udachnaya Pipe - Russia
