Digging too deeply has been a plot point in many stories. There’s even an urban legend that a failed Soviet borehole project broke into ‘hell’ https://en.wiki

Digging too deeply has been a plot point in many stories. There’s even an urban legend that a failed Soviet borehole project broke into ‘hell’ https://en.wikipedia.org/wiki/Well_to_Hell https://en.wikipedia.org/wiki/Well_to_Hell