A silly hypothetical question is answered
I just found out, via digholes.com, that if I were to dig a hole straight through the center of the earth I would come out almost exactly on a line linking the southernmost points of Africa and Australia, a little under half as far from the former. So, if I could build something that could survive passage through all that molten rock, and still have enough energy to overcome the gravitational pull and get back out, I would have plenty of water on the other side to cool my amazing contraption down again at the other end. Nice to know.
