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Deepest Hole On Earth Permanently Sealed After 2 Billion-Year-Old Find.
Soviet scientists embarked on an ambitious project to drill as deep as possible into the Earth’s crust. The result was the Kola Superdeep Borehole, located in the remote Pechengsky District of ...
The Sun26d
Earth’s most terrifying holes from 40,000ft Soviet ‘well to hell’ to Mexico’s mysterious 500ft-wide blue ‘sea sinkhole’
It's currently the deepest man-made hole on Earth, reaching a dizzying 40,230 feet below ground. The Kola Superdeep Borehole is locked away beneath a rusty lidCredit: Rakot13/CC BY-SA 3.0 This ...
Business Insider India5y
These are the deepest and largest man-made holes in the world
America might have landed on the moon, but Russia drilled the deepest man-made hole on Earth. Since the early 1960s, scientists have attempted to drill down to the Earth's mantle. It took 20 years ...