Source: www.curiousread.com
Amazing collection of man made and natural holes in our earth.
Mirny diamond mine, Siberia
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 meters deep with a top diameter of 1200 meters there’s even a no-fly zone above the hole due to a few helicopters being sucked in.
Kimberley big hole - South Africa
Apparently the largest ever hand-dug excavation in the world, this 1097 meter 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 tons.
Glory hole - Monticello dam
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. A glory hole is used when a dam is at full capacity and water needs to be drained from the reservoir.
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.
These photos are of a sinkhole which occurred early this year in Guatemala. The hole swallowed a dozen homes and killed at least 3 people.
Officials blamed the monster of a hole on a ruptured sewage pipe.
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