The planet has 2 openings at the poles like other planets. It is possible that there is hollow earth. Antarctic airspace is restricted to military aircraft. Curious, isn't it? If you decide to go there, it is most likely that you were intercepted, or what is the same, shot down. I think they are prohibited (Jewish governments) from accessing the interior of the land by the ancient inhabitants of Atlantis, and That is why they forbid (hide) from us the existence of the hollow earth.