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  1. 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...

  2. The Kola Superdeep Borehole, once a potent symbol of Cold War-era scientific ambition, remains an object of fascination as the deepest manmade hole on Earth, reaching a staggering depth of 12,262 ...

  3. Nov 10, 2009 · In actuality, the Kola Superdeep Borehole consists of several holes branching from one central hole. The deepest hole is called “SG-3,” and though just nine inches in diameter, it extends...

  4. Feb 22, 2020 · Known as the Kola Superdeep Borehole, the deepest hole ever dug reaches approximately 7.5 miles below the Earths surface (or 12,262 meters), a depth that took about 20 years to...

  5. www.earthdate.org › episodes › kola-superdeepKola Superdeep | EarthDate

    Jun 12, 2021 · From 1970 to 1994, in the western Russian province of Murmansk, the Kola Superdeep Borehole drilled to the deepest point ever reached below Earth’s surface. Housed in this 27-story superstructure, it found high temperatures, gases, fractures, water, and Precambrian fossils, and changed some long-standing scientific hypotheses.

  6. Aug 21, 2019 · It's called the Kola Superdeep Borehole, and for once, it has nothing to do with extracting fossil fuels. The borehole exists purely for the wonderful science of it all. When Soviet scientists started drilling down into Earth's surface during the 1970s, they did it to find out more about the contents of the planet's crust.

  7. Jul 11, 2023 · On the Kola Peninsula in the Russian Arctic lies an innocuous iron disc about the size of a dinner plate. If one were to prise this disc open, they would find the remains of the world’s deepest vertical hole. Reaching a depth of over 12 kilometres, the Kola Superdeep Borehole was drilled in the pursuit of excavating scientific knowledges for ...

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