June 13, 1955 was opened by the famous diamond deposits in Yakutia – kimberlite pipe “Peace” – one of the world’s largest open-cast mines. We have put together the most impressive seven more holes in the surface of the earth, both natural and manmade. Kimberlite pipe “Mir” The quarry is located in the town of Mirny, Yakutia, has a depth of 525 m and a diameter of 1.2 km. “Smoked a pipe of peace, a great tobacco. Avdeenko, Elagina, Habardin “- a radio message about opening diamond pipe” Peace “, June 13, 1955. Giant Blue Hole, Belize The hole is a circular sinkhole 305 meters in diameter, extending to a depth of 120 meters. Located in the center of Lighthouse Reef Atoll, as part of the Belize Barrier Reef. Dyavik diamond mine, Canada The quarry is located on the islands and has the infrastructure to the airport capable of receiving Boeing passenger. In the year here produces about 7.5 million carats of diamonds. Darwaza, Turkmenistan This gas crater local residents and travelers called the “Gates of Hell.” The diameter of the crater is about 60 meters, depth – 20 meters. Bingham Canyon, Utah, USA This copper mine at a depth of 1.2 km and 4 km wide, covers an area of 1,900 acres and is the largest mine of its kind on the planet. Monticello Dam, California, United States As a result of construction of the dam was flooded city of the same name, which is now completely under the surface of the artificial lake Berryessa. The dam is known for the original construction of the spillway in the form of a giant funnel. Its diameter – 22 meters. Diamond Mine “Big Hole”, South Africa This huge, it is now inactive diamond mine, located in the town of Kimberley in South Africa, opened in 1871. It is believed that this is the largest open pit, developed by people without the use of technology. Hard to believe, but it dug using only picks and shovels. At the close of his depth is 240 meters, width – 463 meters. Now it gradually fills the water. And about 100 million years ago in its place was the mouth of a volcano. Karst collapse in Guatemala A huge failure of karst origin arose in Guatemala after Tropical Storm Agatha in 2010. The hole swallowed the entire three-story building. The origin of the failure of a width of about 20 meters and a depth of 30-storey building due process of washing away soil and water bedrock.