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





可以看到第三張圖有個小小的紅箭頭
那是第一張世上最大載貨卡車的位置相較之下就知道這洞有多大了

原文還說到
飛機禁止飛過此洞的上空,怕被吸入進去(好像是什麼原理)

這個洞是真實的,位於俄羅斯境內
當初開發是為了要挖掘鑽石