1、米尔金刚矿场
米尔金刚矿场位于俄罗斯东西伯利亚地区，是世界上最大的人造地穴，它深约525米，入口直径达到了1200米。从远处望去，简直就是一个地面上凭空出现的漩涡。说成漩涡可一点也不委屈它，正是因为此地洞太大，以至于它的上空形成了一个气流旋涡。
据说，直升机和小型飞机都能够被吸进洞里去。如果沿着洞内壁的螺旋式道路前往洞底然后再回到地面，一辆重220吨的掘土机需要花费将近两个小时。
俄罗斯政府机关2004年4月正式关闭该矿。在它最辉煌的时候，金刚石矿平均每年能产大约200万克拉，其价值大约为2000万英镑。
1. mirny diamond mine, siberia
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 sucked in.
2、金伯利钻石场
金伯利位于南非开普省是世界上有名的钻石之都。属于中部高原地区，海拔1220米，人口约15.8万。金伯利最出名的除了世界闻名的钻石以外，还有这个巨型的砖石开采场也称，金伯利大洞。金伯利大洞建于1870年，直到1914年关闭前一共产出了约3吨金刚石矿。
它深1097米，入口直径约500米，占地17公顷，为挖这样一个大洞，一共2200多万吨土被从这里挖走。如今成为旅游者参观的重点景地，供游人观赏。
2. kimberley big hole - south africa
apparently the largest ever hand-dug excavation in the world, this 1097 metre deep mine yielded over 3 tonnes of diamonds before being closed in 1914.the amount of earth removed by workers is estimated to total 22.5 million tonnes.
3、光荣洞
光荣洞是蒙蒂塞洛水坝的枢纽开关，它位于加利福利亚北部。作用是在蒙蒂塞洛水坝存储能力达到极限的时候，把多余的水量尽快的派出。数据显示光荣洞完全打开时蒙蒂塞洛美每秒的出水流量可达1370 立方米/秒 。
3. glory hole - monticello dam
a glory hole is used when a dam is at full capacity and water needs to be drained from the resevoir.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.
4、宾翰峡谷铜矿场
世界上最大的露天铜矿场的铜矿区宾翰大矿坑，坐落在盐湖城西南方的宾翰峡谷又称为宾翰峡谷铜矿场。远远看去犹如巨大的旋转楼梯，直通地底。它所开采出的铜矿产量占全美的三分之一。
据说这曾经是一座高山，，在历经了人类差不多一百年的不停开采挖掘，如今已经成了一个深不可测的地穴，开口直径两英里，深约四英里。
4. bingham canyon mine, utah
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.
5、蓝色大洞
蓝色大洞是一个位于海面上的巨大深穴，具体位置在伯利兹位大陆60公里处是一个难以置信的美丽地方。它的园接近完美，中间深度达到145米，是非常值得一去的旅游圣地。
5. great blue hole, belize
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 metres. obviously the hole is a huge hit with divers.
About 60 miles from Belize City, there is a perfectly circular 1,000 (305 m) feet across and 400 feet (123 m) deep “Blue Hole.” The hole, part of the Lighthouse Reef system, was once an opening to a cave system during the Ice Age - it is now a magnet for extreme divers:
For all the practical purposes the over 400-foot depth makes the Blue Hole a bottomless pit. The walls are sheer from the surface until a depth of approximately 110 feet where you will begin to encounter stalactite formtions which actually angle back, allowing you to dive underneath monstrous overhangs. Hovering amongst the stalactites, you can’t help but feel humbled by the knowledge that the massive formation before you once stood high and dry above the surface of the sea eons ago.
6、Diavik矿井
加拿大耶洛奈夫东北处有有一个奇妙的矿井。他的占地面积非常巨大，它甚至可以有自己的机场跑道，可容纳一架波音737为其服务。在冬季这个矿井扣为结冰，从高处看下去非常的酷。
6. diavik mine, canada
this incredible mine can be found 300km northeast of yellowknife in canada.the mine is so huge and the area so remote that it even has its own airport with a runway large enough to accomodate a boeing 737. it also looks equally as cool when the surrounding water is frozen.
7、深陷
这可不像以上那些地洞，这样好玩，它是在危地马拉地下水坍塌时是造成的。由迄今为止最大型的地面塌陷事故。这些照片是生于今年年初的地洞事故，该洞吞下了十几家，并至少活吞了3人。
7. sinkhole, guatemala
a sinkhole is caused when water (usually rainwater or sewage) is soaked up by the earth on a large scale, resulting in the ground collapsing.
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