How deep is the deepest well that has been drilled into Earth's interior?
1 Answer
Apr 25, 2017
The Kola borehole in Russia still holds the record for the deepest well. Drilling had to stop when the temperature encountered prevented further progress.
Explanation:
The Kola borehole is described here, as well as two other boreholes that are now longer, but turn horizontally, so do not go as deep.
