i really doubt the entire hollow earth idea

there is too much energy at the pole, and the density of magnetic flux would make any expedition extremely dangerous in the cold conditions

and i think that hiding the fact that humans are unable to survive in the conditions of that zone is probably something they are keeping under wraps, by the way that there is such a memory hole attractor around it 

 I too doubt the hollow earth idea, but for sure there are zones that go deep below the surface. Officially they've drilled for about 11 or 12 kilometers, right? That's peanuts compared to the diameter of this planet. 

 indeed, and it's not certain exactly how big the supercritical metal core is, i think that it may be a lot smaller due to the fact it's effectively in a weird quantum state like frozen but actually blazing hot but at the same time so high pressure it is like its frozen