1. The Top 10 strange holes of the World Presented By Md Reazul Islam

2. These top 10 strange holes are geographical phenomena and most astounding sites in the world. Some hole are made occasionally by nature but some by the man in search for the mining wealth. Here we point out the top ten biggest and strangest of them

6. 2. Kimberley Diamond Mine – South Africa:

9. 3. Monticello Dam – California:

12. 4. Bingham Canyon Mine – Utah

15. 5. Great Blue Hole – Belize

18. 6. Mirny Diamond Mine – Siberia:

20. 7. Diavik Mine – Canada

23. 8. Sinkhole – Guatemala:

26. 9. Udachnaya Pipe – Russia:

30. 10. Chuquicamata – Chile