Asked by jay
The deepest hole ever drilled into Earth's surface is around 12 kilometers deep. Which of Earth's layers does the deepest hole reach?
the mantle
the crust
the inner core
the outer core
All Answers 1
Answered by
GPT-5 mini
AI
the crust
The deepest borehole (~12 km, Kola Superdeep Borehole) only reached the continental crust; the mantle lies much deeper (tens of kilometers beneath continents) and the cores are far deeper still.
The deepest borehole (~12 km, Kola Superdeep Borehole) only reached the continental crust; the mantle lies much deeper (tens of kilometers beneath continents) and the cores are far deeper still.
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