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The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]
As the race in space was winding down, soviet scientists turned inwards. You'd never guess that this is the site of one of their great achievements. This hard-to-find rusty cap in the ruins of a ...
View overlooking the quarry. Rubislaw Quarry is a quarry situated at the Hill of Rubislaw in the west end of the city of Aberdeen, Scotland.. The quarry is one of the biggest man-made holes in Europe at approximately 466 ft. (142m) deep, and with a diameter of 394 ft. (120m). [1]
Man dives into underwater sinkhole in stunning, terrifying video ... At up to 115 feet wide and 663 feet deep, Dean's Blue Hole is the world's deepest blue hole ... The film was originally made in ...
The Xiaozhai Tiankeng is 626 meters (2,054 feet) long, 537 meters (1,762 feet) wide, and between 511 and 662 meters (1,677 and 2,172 ft) deep, with vertical walls. Its volume is 119,349,000 m³ and the area of its opening is 274,000 m 2. This material has been dissolved and carried away by the river.
In 2012, scientists exploring blue holes in the Bahamas discovered bacteria deep in the caves where no other life existed, potentially filling the knowledge “gap” on what types of lifeforms ...
Boesmansgat (or Bushmansgat), also known in English as "Bushman's Hole", is a deep submerged freshwater cave (or sinkhole) in the Northern Cape province of South Africa, which has been dived to a depth of 282.6 metres (927 ft). Boesmansgat was believed to have first been explored by amateur diver Mike Rathbourne, in 1977.
Scientists using an ocean drilling vessel have dug the deepest hole ever in rock from Earth's mantle - penetrating 4,160 feet (1,268 meters) below the Atlantic seabed - and obtained a large sample ...