Nazis and the Hollow Earth
Did Hitler's Nazis believe in a hollow Earth - and did they escape to the planet's interior after the war? From your About.com guide.

Secrets of the Hollow Earth
The interior of the Earth, some believe, is home to strange races of technologically advanced beings. Who are they and where are the hidden entrances to their subterranean cities?

Giants in the Hollow Earth
Actually takes you, page by page, inside the hollow Earth, describing the lost city of Agartha you'll find there. Yes, they're serious.

The Greys: UFOs From the Hollow Earth
Are aliens - the "greys" - actually beings from the interior of our own Earth? They are, according to this convoluted theory.

The Hollow Earth
A short history of the hollow Earth theory, from Edmund Halley's proposal to the Nazi expedition in 1942.

Hollow Earth
Some photos and illustrations accompany this basic article about the hollow earth theory, and claims of those who have been inside.

The Hollow Earth Insider
Includes good info about hollow Earth, Admiral Byrd's expeditions, historical secrets, subterranean worlds, UFOs and more.

The Hollow Earth: Reality or Myth
Popular purveyor of the paranormal, Brad Steiger takes a look at one of the most persistent legends of esoterica.

Hollow Earth in the Puranas
The Puranas make several comments in relation to the hollow Earth which should not be taken lightly. Although they are but comments in passing, their impact should be recognized.

Hollow Earth Resources
A list of newsletters and books on the subject, some of which are no doubt out of date.

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