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The 23-centimetre-diameter (9 in) boreholes were drilled by branching from a central hole. [1] The deepest reached 12,262 metres (40,230 ft; 7.619 mi) in 1989, the deepest human-made hole on Earth, and remains so as of 2024 . In terms of true vertical depth, it remains the deepest borehole in the world.
Oct 20, 2023 · Learn about the history, challenges and discoveries of the Kola Superdeep Borehole, which reached a depth of 40,230 feet (12,262 meters) in 1989. Find out why the Soviets drilled so deep and what they found in Earth's crust.
May 6, 2019 · This is the Kola Superdeep Borehole, the deepest manmade hole on Earth and deepest artificial point on Earth. The 40,230ft-deep (12.2km) construction is so deep that locals swear you can hear...
- There is more than just one borehole there. The Kola Borehole is a series of boreholes, not just one. Several boreholes were drilled there, the deepest reaching its record depth in 1989.
- Scientists made some surprising discoveries. One of the most surprising findings during the Kola Superdeep Borehole project was the discovery of evidence of early life.
- It is the deepest thing humans have ever dug. Drilling began on the Kola Superdeep Borehole on May 24, 1970, using the Uralmash-4E drilling rig and later the Uralmash-15000 series rig.
- It was abandoned in 1992. The Kola Borehole was abandoned in 1992 after drilling encountered temperatures of 356 degrees Fahrenheit, °F (180 degrees Celsius, °C), exceeding the expected 212 degrees Fahrenheit (100 degrees Celsius).
Feb 22, 2020 · Learn about the deepest hole ever dug by humans, which reaches 7.5 miles below the Earth's surface in Russia. Find out why scientists drilled it, what they discovered, and why it's called the well to hell.
Nov 10, 2009 · Learn about the deepest hole in the world, drilled by the Soviets to study the Earth's crust and find fossils of ancient life. Discover the challenges, discoveries and mysteries of this engineering feat.
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Jun 12, 2021 · Learn about the Kola Superdeep Borehole, the deepest hole ever drilled into Earth's crust, and the discoveries it made about the nature and history of our planet. Listen to the podcast episode, read the synopsis, and download the documents to learn more.
