What Is The Most Amazing Building You Have Ever Seen?

10.Mirny Diamond Mine

The abandoned Mirny Diamond Mine, a huge swirling cave excavated in 1955, decided to close the diamond cave in 2004. The world’s largest diamond cave, which had been in operation for 46 years, was officially shut down. The diameter of the entrance is 1,200 meters and the depth is approximately 525 meters, which is equivalent to the height of 161 floors. If a small aircraft with too light mass flies over it, it will be sucked into the cave by the air flow.

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