The most amazing holes in the world -> Destinations

   "The door to hell", as locals called this place is a crater 70 meters in diameter, near the town Darvaza (from Turkmenistan), burning continuously for 38 years.    In 1971, geologists digging to discover gas deposits have stumbled upon a huge underground cave, which made the earth to collapse, taking with him all geological equipment. Since the cave was filled with toxic gas, geologists have never dared to go into the cave to recover the equipment, hop...

  It is a dam in the Napa, California, built between 1953 and 1957. It is a concrete arch with a height of 93 m and 312 m long and contains 249,000 cubic meters of concrete. The dam formed the largest lake in California, Lake Berryessa, with a capacity of 1.976 million cubic meters of water....

  Bingham Canyon mine is a copper career in Oquirrh Mountains, Utah. It is 1.2 km deep and 4 km in diameter. It is the largest man-made excavation in the world. The career started to be used in 1906, and resulted in 7.7 square hole. Over time, the mine has proven to be most productive in the world....

  It is the largest diamond mine in the world. This mine is 525 m deep and a diameter of 1200 m. It is the first career in Russia, and one of the largest. It is now abandoned, and when was still operational, it took about 2 hours for trucks to get down to the exit of the mine. Absorption of air circulating inside led to collapse of various helicopters, therefore it is prohibited any flight above it now....

  Diavika is a mine in the Northwest Territories of Canada. Opened in 2003, diamond mine produced 1.600 kilograms per year (8 million carats). It is owned by a joint venture of Harry Winston Diamond Corporation and Diavik Diamond Mines Ink. Life expectancy for this career is from 16-22 years....

  Udachnaya is a diamond mine in Russia. Owners of this I plan to stop its operations in 2010, in favor of underground mining. Udachnaya was discovered in 1955 and has over 600 m deep. Since 2004 the mine is controlled by a Russian diamond company, Alrosa....