[tombh]

Thanks, I think yours is actually a much more relevant answer than the one in the article. Personally, I took the original question as a _geophysical_ one, not a logistical one. I mean sure it's geophysically interesting that our current drills are just orders of magnitude too inconsequential, but your answer actually corrects the implied intuition that both I and the question asker wrongly had, namely that magma is like coke in a can.