The World's Deepest Borehole: Kola Superdeep Borehole

The Kola Superdeep Borehole, deepest manmade hole on Earth and deepest artificial point on Earth is located in the Pechengsky district on the Kola Peninsula in Northwestern Russia. Kola Superdeep Borehole also known as the "entrance to hell" or "well to hell". Since 1988 Kola Superdeep Borehole is deepest borehole in terms of Vertical Depth and measures 12,262 metres (40,230 Ft deep), (12.2 Km) and 23 cm in diameter.

The Borehole is located in the wild's of northern Kola Penisula (Credit: Getty Images)

Drilling commenced in May 1970 after 10 years of planning by Russian then USSR's Interdepartmental Scientific Council of the Earth's Interior.

The borehole still exists: but the entrance has been welded shut (Credit: Rakot13/CC BY-SA 3.0)

Reference:

https://www.bbc.com/future/article/20190503-the-deepest-hole-we-have-ever-dug#:~:text=This%20is%20the%20Kola%20Superdeep,of%20souls%20tortured%20in%20hell.

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