Hollow Earth Gateway to Another Dimension?

So… at this point, nothing really seems too absurd.

I think it’s clear that the world governments have recovered various ships from NHI.

However, since Grusch (amongst others) have posited that the NHI may not actually be extraterrestrial but instead extradimensional – it has got me thinking.

Many believe that there are pyramids in Antarctica and potentially government bases (and possibly NHI bases).

With the amount of UFOs submerging into the ocean and surrounding places like Antarctica, what do you think about Antarctica or the oceans actually have a portal or gateway to another dimension?

Hollow Earth theories have been around since ancient times but what if there is more to the story?

Just curious to hear other people’s thoughts.