Wow....so Shangri-La might actually be in Antarctica. What else might back this up is the fact that we can only find the Vril weapon in the only map that plays in the ''icy part'' of Antarctica, CotD. Why are the Vril-Ya connected to that map though? Not only through the logs and stories about Byrd and the Vril but also through the fact the Vril cannon transforms the zombies into humans again, into a higher species. The Vril-Ya are said to be a higher species, but live under the surface of our planet which is why they're sometimes depicted as subspecies in fiction.