Russian Diamond Mine Is The Worlds Second Largest Hole

The second-largest man-made hole in the world (surpassed only by the Bingham Copper Mine in Utah) is a diamond mine located on the outskirts of Mirny, a small town in eastern Siberia. Begun in 1955, the pit is now 1,722 feet deep and 0.78 miles in…

Posted on June 29, 2013, 15:54 GMT