[PHOTOS] 5 of the most staggering facts about the Mponeng ...
Sep 22, 2015· 1. Mponeng is as deep as 10 Empire State Buildings As the world''s deepest manmade hole, the depth of the Mponeng Gold Mine is almost mythical. Located southwest of Johannesburg in South Africa, the mine descends miles below the Earth''s surface—enough to stack 10 Empire State Buildings on top of each other. This doesn''t include the 236 miles of tunnels throughout the mine, .