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A sinkhole, also known as a sink, shake hole, swallow hole, swallet, doline or cenote,
It is a natural depression or hole in the surface topography caused by karst processes – the chemical dissolution of carbonate rocks. Sinkholes may vary in size from less than 1 to 300 meters (3.3 to 980 ft) both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. They may be formed gradually or suddenly, and are found worldwide. These terms are often used interchangeably, though many distinguish between features a surface stream flows into and features with no such input.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Top Amazing Sinkholes in The World
