The world's biggest hole 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 following truck loader is one of the biggest in the world - lenth 13.36 meters, width 7.78 meters and height 6.65 meters.

This gaint machine appears just a small point in the next image…

 The suction above the hole resulted in several helicopter crashes, so all flight above the hole is prohibited now.

A view from a satellite…