Why was this? The Nazis did not create the hollow Earth concept. The idea preceded them. Even illuminati members Edgar Allen Poe and Jules Verne alluded in their poetry and prose to such a place, deep underneath the crust. Call it conspiracy, but the Nazi's led three expeditions to Antarctica, and Admiral Richard Byrd, who led Operation Highjump, suggests that "bases" were established in Antarctica by the Nazis. They were doing something down there. Was the continent an escape for them?
All of the work in this documentary is, to the best of my ability, as accurate as possible. Some have questioned the authenticity of Richard Byrd's secret diary. Despite this, I have found no reason to doubt it authenticity, considering that many of the claims made in the book are highly detailed about his experiences.
Please note: this video is not an attempt to offer a commentary on globe vs. flat earth. This video is meant to say that the Nazis were operating in Antarctica, and possibly made a quick escape through Antarctica when they had to flee. My commentary on hollow earth is meant to reflect what the Nazis believed in Europe at the time, influenced by Theosophist Helena Blavatsky, who believed the master race lived inside the Earth.