The world’s biggest hole Mirny Diamond Mine

The world’s biggest hole Mirny Diamond Mine ...!! The world’s biggest hole Mirny Diamond Mine is
located in Russia
The gaint hole is actually a diamond mine in
Eastern Siberia near the town Mirna. It is 525
meters deep and 1.25 km in the diameter. The
suction above the hole resulted in several helicopter crashes, so all flight above the hole is
prohibited now.