num_pages: 254
description: This controversial book claims that flying saucers not only exist, but that they are the vehicles of a super-race that lives in a huge, underground world whose entrance is in the earth's North Pole.
language: English
title: The Hollow Earth
titlecomplete: The Hollow Earth
genres: Nonfiction, Paranormal, Conspiracy Theories
ratings_count: 169
places: Hollow Earth
publisher: Citadel Press