I think it is clear that the Earth radius has increased (4-fold just to fit the oceanic basins), and based on that I think it is likely that the Earth is hollow. I am open to the polar holes theory based on that. Reading a bit around the idea that Atlantis was Antarctica (Atlas carrying the Earth, like the south pole continent would, and the Atlas vertebrae, and the Crux constellation very close to the celestial south pole, and the Cross of Atlantis allegedly an ancient symbol), I came across "The 8-rayed symbol of the Nibiru (gate)", and had the idea that Nibiru might be an ancient word not for a planet that aliens came from, but, a "crossing". https://www.bibliotecapleyades.net/stargate/stargate08.htm
A polar hole is geometrically similar to a "worm hole" except it is just a hole. Looks the same, schematically.
Gerardus Mercator map from 1595 showing a hole at the pole. The drawing is interpreted as a mountain by many, but, as anyone who draws knows, a 3d object can point both towards you or away from you, you can switch based on how you focus. Next to the hole it says "rupes nigra et altisima", rupes is from the same root as rupture.
