Corvinus said:Think the better question is why were they looking for a path to interior?
To me when you take into account cave people in France, Spain, underground city Derinkuyu in Turkey, even with all their technology they could not defend against cataclysms and comets so were looking for escape to interior and their civilisation survived, advanced and thrived while we the surface dwellers got stuck in repetetive cycle of destruction and building it all again from scratch, knowledge being lost and plus that thanks to mutations we got psychopaths.
Since the discussion is already underway on other threads I won't clutter this one with more noise.
Here are some:
Another hit for the Cassiopaeans? Unexplained activity in Antarctica
Man Made Ancient Pyramids Found on Antarctica
Antarctica/Hitler