So here it is.THE TOP 10 :-
10) CHUQUICAMATA COPPER MINE,CHILE :
9) THE BINGHAM CANYON MINE,USA :
8) UDACHNAYA PIPE,RUSIA :
7) THE MIRNY DIAMOND MINE,RUSIA :
6) DIAVIK DIAMOND MINE,CANADA :
5) GUATEMALA SINKHOLE,REPUBLIC OF GUATEMALA :
4) THE GREAT BLUE HOLE :
3) THE MONTICELLO DAM,CALIFORNIA,USA :
2) KIMBERLEY DIAMOND MINE,SOUTH AFRICA :
1) DARVAS GAS CRATER,"GATES OF HELL",TURKMENISTAN :
wow.. amazing!!!!
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