"This book is written in such an exciting way that I wanted to find various underground beasties. And that is the author's magic". -- Fate"This is a very well-written, all-inclusive, and absolutely unstoppable book... a brilliant goldmine. The illustrations are superb". -- Gnosis MagazineA delightful work tracing the history of hollow earth theories to their origins. A journey into the human imagination as much as a journey to the center of the earth. Includes dozens of rare photographs and drawings. An excellent book for both teens and adults.