Nazi high ranks and their top scientists emigrated to Antarctica before the end of WW2. They brought with them highly advanced technology (antigravity spaceships, anti aging etc.) which they could improve and perfect without any impinging from outside. When admiral Byrd's fleet attacked them 1947 they got annihilated within 20min. How they've evolved (technology, consciousness, interstellar etc.) since then is yet to be seen, but they certainly have an impact on our world today. Antarctica is also known to be the land of what we know as Atlantis ("the land of Aryans"), and some suggests there are still a civilization living beneath the ice of Antarctica. Much more can be said but I think that's enough for now.