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Top 10 amazing holes in the World

In man's search for mineral wealth, many enormous holes have been dug. In addition, nature occasionally produces some astounding holes. This list is a pick of the ten most spectacular natural or manmade holes in the face of the earth. Many thanks to rushfan for sending in the images for this list

1 Darvaza Gas Crater-Turkmenistan

Darvaza Gas Crater

In 1971, geologists discovered a massive underground deposit of natural gas on this site. Whilst excavating the hole to tap the gas, thedrilling rig collapsed leaving a massive hole. To prevent poisonous gasses from escaping, the hole was allowed to burn. It continues to burn to this day and has done so without ceasing.

2 Kimberley Diamond Mine-South Africa 

Kimberley Diamond Mine

The Kimberley Diamond Mine (also known as the Big Hole) holds the (disputed) title of being the largest hand-dug hole in the world. From 1866 to 1914 50,000 miners dug the hole with picks and shovels, yielding 2,722 kg of diamonds. Attempts are being made to have it registered as a world heritage site.

3 Monticello Dam-California 

Monticello Dam

The Monticello Dam is a dam in Napa County, California, United States most noted for its large circular spillway with a rate of 48,400 cubic feet per second.

4 Bingham Canyon Mine-Utah 

Bingham Canyon Mine

The Bingham Canyon Mine is a copper mine in the Oquirrh mountains, Utah. The mine is 0.75 mile (1.2 km) deep, 2.5 miles (4 km) wide. It is the world's largest manmade excavation.

5 Great Blue Hole-Belize 

Great Blue Hole

The Great Blue Hole is an underwater sinkhole off the coast of Belize. The hole is 1,000 feet across and 400 feet deep. It was formed as a limestone cave during the last iceage.

6 Mirny Diamond Mine-Siberia

Mirny Diamond Mine

The Mirny Diamond Mine is 525m deep and has a diameter of 1200m. It was the first, and one of the largest, diamond Pipes in the USSR. It is now abandoned. While it was still operational, it would take two hours for trucks to drive from the top to the bottom of the mine.

7 Diavik Mine-Canada 

Diavik Mine

The Diavik Mine is a mine in the Northwest territories of Canada. The mine (opened in 2003) produces 8 million carats or about 1,600 kg (3,500 lb) of diamonds every year.

8 Sinkhole-Guatemala 

In 2007, a 300 foot deep sinkhole swallowed a dozen homes in Guatemala - killing 2 and causing thousands to be evacuated. The sinkhole was caused by rains and an underground sewage flow.

9 Udachnaya Pipe-Russia 

The Udachnaya Pipe is a diamond mine in Russia. The owners of the mine plan to cease its operations in 2010 - in favor of underground mining. The mine was discovered in 1955 and is over 600 meters deep.

10. Chuquicamata-Chile

Chuquicamata is an open pit copper mine in Chile. It is the mine with the largest total production of copper in the world - though it is not the largest copper mine. The mine is over 850 meters deep.