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Sounds promising. How realistic is the depth target of 20km really? Also, I would assume this infrastructure will be less applicable in locations with frequent earthquakes.


Considering that the current deepest borehole in the world is 12km [1], 20km is a lofty goal.

[1] https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole


> The deepest reached 12,262 meters (40,230 ft) in 1989

Hopefully those 30 years of technology will be of service




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