Technology
Kola Superdeep Borehole Still World's Deepest Hole
The Kola Superdeep Borehole reached 12,262 meters into Russia's Kola Peninsula in 1989, just 0.19% of the way to Earth's center.
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The Kola Superdeep Borehole reached 12,262 meters into Russia's Kola Peninsula in 1989, just 0.19% of the way to Earth's center.