Whatever it is says go deep underground, and that central South America as well as New Zealand are good for hidey-holes, isolated southern hemisphere. Sounds like an external existential threat to me.
The Nazi elite made similar contingency plans, like in Uruguay and Argentina and Chili. They succeeded in surviving in remote enclaves using their wrealth stolen from Jews, etc. to buy off local politicians and police forces. You can read all about it in RATLINE by Peter Levenda. He went down into South America to make first-hand investigation. But be warned, if you think Rockefeller and the Dulles brothers were patriots to America, the truth will shock you.