மிரட்டும் 10 கொடூரமான குழி

1. 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