Mir Mine is an abandoned open pit diamond mine located in Mirny, Eastern Siberia. The mine is 525 m deep and has a diameter of 1200 m. It was the first and one of the largest diamond pipes of the USSR. Mir Mine was discovered on June 13, 1955 by Soviet geologists Yuri Khabardin, Ekaterina Elagina and V.Avdeenko during the large Amakinsky Expedition in Yakut ASSR. It was operated for almost 50 years, finally closing on April 30, 2004 while in operation, Mir Mine gave out 2 million carats annually. It takes trucks close to 2 hours to drive from the bottom to the top.
Mirny diamond mine from east Siberia. Mirny is 525 m. depth and 1.25 km in diameter.
Mirny
Mirny
Mirny
The Big Hole is an open-pit mine in Kimberley, South Africa and claimed to be the largest hole excavated by hand.
From 1866 to 1914 up to 50,000 miners dug the hole with picks and shovels, yielding 2,720 kilograms (6,000 lb) of diamonds. The Big Hole has a surface of 17 hectares (42 acres) and is 463 metres (1,520 ft) wide. It was excavated to a depth of 240 metres (790 ft) but then partially infilled with debris reducing its depth to about 215 metres (710 ft) since then it has accumulated water to a level 40 metres (130 ft) below the surrounding land surface, leaving 175 metres (570 ft) of the hole beneath water. The underground Kimberley Mine was mined to a depth of 1097 metres.
There is currently an effort in progress to register the Big Hole as a World Heritage Site.
From 1866 to 1914 up to 50,000 miners dug the hole with picks and shovels, yielding 2,720 kilograms (6,000 lb) of diamonds. The Big Hole has a surface of 17 hectares (42 acres) and is 463 metres (1,520 ft) wide. It was excavated to a depth of 240 metres (790 ft) but then partially infilled with debris reducing its depth to about 215 metres (710 ft) since then it has accumulated water to a level 40 metres (130 ft) below the surrounding land surface, leaving 175 metres (570 ft) of the hole beneath water. The underground Kimberley Mine was mined to a depth of 1097 metres.
There is currently an effort in progress to register the Big Hole as a World Heritage Site.
Kimberly Hole is about 1097 m. depth
Bingham Canyon Hole, UTAH. Its depth above 1 km and about 4 km width
Deep Blue Hole is 60 mil away from Belize and it is very amazing…Its depth is 145 m. and 400 m. width
A blue hole is a submarine cave or sinkhole. They are also called vertical caves.
Blue holes are roughly circular, steep-walled depressions, and so named for the dramatic contrast between the dark blue, deep waters of their depths and the lighter blue of the shallows around them. Their water circulation is poor, and they are commonly anoxic below a certain depth; this environment is unfavorable for most sea life, but nonetheless can support large numbers of bacteria.
Blue holes are roughly circular, steep-walled depressions, and so named for the dramatic contrast between the dark blue, deep waters of their depths and the lighter blue of the shallows around them. Their water circulation is poor, and they are commonly anoxic below a certain depth; this environment is unfavorable for most sea life, but nonetheless can support large numbers of bacteria.
Diavik Diamond Mine from Canada
The Diavik Diamond Mine is a diamond mine in the North Slave Region of the Northwest Territories, Canada, about 300 kilometres (186 miles) north of Yellowknife. It has become an important part of the regional economy, employing 700, grossing C$100 million in sales, and producing 8 million carats (1600 kg) of diamonds annually. The area was surveyed in 1992 and construction began in 2001, with production commencing in January 2003. It is connected by an ice road and Diavik Airport with a 5,235-foot (1,596 m) gravel runway regularly accommodating Boeing 737 jet aircraft.
In Guetemala becouse of heavy rain this hole is open and destroyed a lot of house.