[alas44]

Recent video on the topic by Real Engineering, interviewing a start-up in this domain that aims at creating new technology to dig 10km+ bore holes using plasma to vaporise rocks https://www.youtube.com/watch?v=b_EoZzE7KJ0

[kragen]

This article is about that startup, describing a visit to their lab; unlike Real Engineering videos, the article is fact-checked.

[thinkcontext]

Highly speculative. Last I looked they had drilled inches in a lab.