The Deepest Hole In The World and What We've Learned From It. The Kola Superdeep Borehole

The Deepest Hole In the World, Kola Superdeep Borehole

It is amazing that as of today, 2023, no one has drilled into the earth any further than the Soviet Union in the Pechengsky District did on the Kola Peninsula, ending the digging in 1989. Drilling into the Earth's crust brought about astounding new information dating back billions of years, and that was only digging into a fraction of the Earth's crust.

The Kola Superdeep Borehole began drilling on May 24, 1970, and is to date the deepest manmade hole in history. The deepest reached is 12,262 meters (40,230 ft; 7.619 mi) in 1989, the deepest human-made hole on Earth, and remains so as of 2023.

The video below (short) presents the details of the dig and the findings. 

"SciShow takes you down the deepest hole in the world -- Russia's Kola Superdeep Borehole -- explaining who dug it and why, and what we learned about Earth in the process. Don't fall!"

Borehole Images: Application and Case Histories (Geological Society Special Publication)

by M. A. Lovell (Author, Editor), G. Williamson (Editor), P. K. Harvey (Editor)

"Borehole images now form a major part of the interpretation strategy for subsurface geological interpretation in a wide variety of scenarios. This volume documents some case histories together with image acquisition and analysis techniques and includes three major reviews of recent applications and technical developments..."

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