이해할수없는 지구의 불가사이한 지형들..
불가사이한 지구의 지형들... 원본주소 / http://nuffy.net/cool/articles/ten-worlds-biggest-holes.html#12 Chuquicamata, Chile Chuquicamata is an open pit copper mine in Chile. It is the mine with the largest total production of copper in the world - though it is not the largest copper mine. The mine is over 850 meters deep. Udachnaya Pipe, Russia The Udachnaya Pipe is a diamond mine ..