3 ms·
A 21st century deep drilling record that surpasses the https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole https://en.wikipedia.org/wiki/Kola_Superdeep_Boreho
by 7373737373 6y ago
A 21st century deep drilling record that surpasses the https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole