3 ms·
USSR, land, 12,262 metres: https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole US, sea, 183 m below the
by krallja 6y ago
USSR, land, 12,262 metres: https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole
US, sea, 183 m below the sea floor in 3,600 m of water: https://en.wikipedia.org/wiki/Project_Mohole https://en.wikipedia.org/wiki/Project_Mohole