The Earth is hollow. Not only there were US soldiers that confirmed it, hence why there were silenced, but in books and literature (see jules verne) the earth is explored by the inside. Powerful people doesnt want humans to see the reality of things, they hide something about the hollow earth. In this theory the earth has 2 ways to access the inside: by the poles. The Antartica hole and the north pole hole. That´s why you see a bunch of soldiers guarding "apparently nothing" in Antartica and the north pole. At this point i´m 99% sure it´s hollow. The 1% is because i was not inside. But maybe i will, if people like me help to get us inside.