I have been thinking about the Lockwood books, and time travel, and Antarctica, and aliens etc.
The criminal political stuff is gross and boring, blech. Serious treason, horrific yes, but depressing.
The deeper mysteries are far more interesting and useful.
I think there are strata of different types of 'worlds' within the earth, inside. Think the poles are entrances. Think these portals are used by ETs to come and go and zoom around to other universes. Other ways to travel but these are easy routes.
Think the portals are also easy ways to time travel, and the science of time traveling is known there. Can be done via portals, machines, and also spiritually by using metaphysical laws.
The basic gist of this is in the Baron Trump Lockwood novels, as a way to signal to our time hints.
Think Nazis stumbled on this and Cabal been trying to use / mess it up ever since.
Do think there are other beings and powers and karma now involved.
Re Lockwood books: Still utterly mind blowing. Gotta wonder how.