標題: 世界七大奇洞! [打印本頁] 作者: Peter 時間: 2011-6-12 21:48 標題: 世界七大奇洞!
世界七大奇洞!
Mirny diamond mine, siberia
Mirny鑽石礦,西伯利亞
i’m pretty sure most people have seen this one. it’s an absolute beast and holds the title of largest open diamond mine in the world. at 525 metres deep with a top diameter of 1200 metres there’s even a no-fly zone above the hole due to a few helicopters being suc ked in.
this is the glory hole belonging to monticello dam in california and it’s the largest in the world, its size enabling it to consume 14′400 cubic feet of water every second.
the hole can be seen at the top left of the photo above. if you were to jump in for some reason your slightly damp body would shoot out near the bottom of the dam (below).
this is supposedly the largest man-made excavation on earth. extraction began in 1863 and still continues today, the pit increasing in size constantly. in its current state the hole is 3/4 mile deep and 2.5 miles wide.
situated 60 miles off the mainland of Belize is this incredible ‘geographical phenomenon’ known as a blue hole. there are numerous blue holes around the world but none as stunning as this one.
at surface level the near perfectly circular hole is 1/4 mile wide, the depth in the middle reaching 145 meters. obviously the hole is a huge hit with divers.
the mine is so huge and the area so remote that it even has its own airport with a runway large enough to accommodate a Boeing 737. it also looks equally as cool when the surrounding water is frozen.
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