Deepest Holes In The World: Stories Behind These Revealed
KTB Borehole, Germany
This drilling project that was known as the German Continental Deep Drilling Program operated from 1987 to 1995 and has reached nearly 30,000 feet.
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KTB Borehole, Germany
This drilling project that was known as the German Continental Deep Drilling Program operated from 1987 to 1995 and has reached nearly 30,000 feet.
