| outer space, the assumption was that national borders extended infinitely outwards. Once it became clear that this would cause problems in space exploration a treaty was drafted through the UN, limiting what could take place out there.
I assume that once it becomes practical to reach down into the Earth far enough a similar treaty will be formed for subsurface use. It hasn't been necessary until now, so the convention that a country's borders extend to the center of the Earth still stands.
I don't see from this Wiki entry exactly how far down this treaty extends; likely to the reach of our atmosphere. |
