One of the world's oldest legends tells of a vast network of underground tunnels and passageways linking the continents to a subterranean kingdom. This utopia i

1983 Highly illustrated. Gives much valuable information on the hollow earth, hollow earth societies, early hollow earth pioneers or "In-Earthologists".

One of the world's great mysteries is: do we live on a hollow earth? In the first detailed investigation of a legendary belief that can be traced back to the da

Scientific and anthropological evidence for multiple Atlantean empires and the global catastrophes that destroyed them • Reveals that there was not one but th

An examination of archaeological controversies, with arguments showing evidence of prehistoric civilizations not recorded as part of human history. Are history