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History of the Man-made Wonders of the World
The Original Seven Wonders Of The Ancient World:
The Seven Wonders Of The Middle Ages:
The New Seven Wonders Of The Modern World (July 7, 2007):
The Amazing Holes on Earth
Description Image
01. Belize - Great Blue Hole

This incredible geographical feature known as a blue hole is situated 60 miles off the mainland of Belize. There are numerous blue holes around the world, but none is as stunning as this one.
02. California - Glory Hole - Monticello Dam

A glory hole is used when a dam is at full capacity and the water needs to be drained from the reservoir. This is the 'Glory Hole' at the Monticello Dam, and it's the largest of this type of spillway in the world. Its size enables it to drain 14,400 cubic feet of water every second.
03. Canada - Diavik Mine

The mine is so huge and the area is so remote that it has its own airport with a runway large enough to accommodate a Boeing 737.
04. Guatemala - Sinkhole

This newly created sinkhole swallowed a dozen homes and killed at least three people.
05. Russia - Kola Superdeep Borehole

The deepest hole ever drilled by man is the Kola Superdeep Borehole, in Russia . It reached a depth of 12,261 meters (about 40,226 feet or 7.62 miles). It was drilled for scientific research and gave up some unexpected discoveries, one of which was a huge deposit of hydrogen - so massive that the mud coming from the hole was boiling with it.
06. Serbia - Mirny Diamond Mine

It's the largest open diamond mine in the world. At 525 meters in depth, with a top diameter of 1200 meters, a no-fly zone is imposed above the hole due to a few helicopters having been sucked in.
07. South Africa - Kimberley Big Hole

Apparently the largest ever hand-dug excavation in the world, this mine, with a depth of 1097 meters, yielded over three tons of diamonds before it was closed in 1914.
08. Utah - Bingham Canyon Mine

This is supposedly the largest man-made excavation on earth. Extraction began in 1863 and it continues today. In its current state the hole is approximately one mile deep and 2.5 miles wide.
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