For every few miles you drill the temperature rises by 370F. The closest we've ever come to drilling was with the Japanese scientific drilling ship Chikyu [1].

For every few miles you drill the temperature rises by 370F. The closest we've ever come to drilling was with the Japanese scientific drilling ship Chikyu [1]. It had to stop because of extreme pressure collapsing the walls of the drilling hole after just 7km. Just putting it into perspective, the amount of heat trapped inside Earth is immense. [1] https://en.wikipedia.org/wiki/Chiky%C5%AB https://en.wikipedia.org/wiki/Chiky%C5%AB