Continuing with Genesis for the New Space Age by John B. Leith....

....Nineteen eighty (the year of this book's publication) will be the first time that the people of the known world first learned that they were not alone on this planet. Over half a billion lost relatives of us surface dwellers live peaceably inside the Earth's center. Moreover, these highly advanced people occupy a land mass greater in area than the outside surface.

Their civilizations flourished thousands of years before Moses gave the Israelites their first code of laws. Their people were driving automobiles and flying in "aerial cars" when ancient Greece laid the foundations of Western civilization, and their commerce swept the interior oceans when the Mediterranean was but a Roman lake.

Yet these shy inhabitants of the hollow earth have remained incognito and free of war for 30,000 years. At what period this inner world was first colonized is unknown, but the existence of the largest group concealed in the earth's interior dates back 15,000 years -- 3,000 years prior to the sinking of their upper continent of Atlantis. They claim that catastrophe is the deluge known to us as the Noah flood or Gilgamesh Epic.

But the oldest race in the inner world is of ancient Germanic origin, tracing its beginnings to the frozen Antarctic in the world above when that sub-continent was once an inhabited tropical paradise of unsurpassed riches and beauty. Their exodus to inner earth was 30,000 years ago.

Regardless of international government censorship, thousands of surface dwellers in several countries know something of the inner earth due to its recent enterprising colonization by modern-day Germans. But additional evidence is irrefutable that the ancestral races of the Lapps, Eskimos, Chinese, Scandinavians, Germans, Greeks and other large ethnic groups still live inside the earth....

...The following, therefore, is the summarized story of how Atlantis and other upper world lands disappeared beneath the ocean as explained in the chronicles of their race and studied in the historical text books used in the schools and universities of Atturas in the interior of the Earth as Professor Haammaan tells it:

The original Atlantis began as a Venusian colony 33,000 years ago in the fertile valleys and plateaus of a continent located in the mid Atlantic. (Venus itself was originally a space colony of Earth from which the inhabitants had fled at an unknown time because of an earthly cataclysm of planetary nature.) Before destruction 11,500 years ago in an atomic war, Atlantis stretched from the vicinity of Africa to what is now the Islands of the Caribbean. It was once a land of great wealth and had developed a society and technology equal to the leading nations of the upper Earth in the 20th century. Their space ships travelled Earth skies and also ventured into outer space where trade routes to other planets were developed.

But the Atlanteans had a mortal enemy. This was a people named the Athenians living in great cities located in the Mediterranean valley and principally the Aegean area. A three hundred year old trade rivalry gradually became insufferable as each nation prepared for war to destroy the other....
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