See also:
 | - The Ancient Ica Stones of Dr. Cabrera - - Attributes stones from Peru to an unknown ancient civilization, and interpreted as showing advanced technologies; includes photographs and links.
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 | - Coso Geode - - What appeared to be a typical geode, covered by fossils that dated it to a half million years ago, when cut in half was revealed to have a ceramic insulator surrounding a titanium electrode.
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 | - Hollow Planets - - Various theories of a hollow earth, containing civilizations beneath the surface.
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 | - In Plain Sight - - American epigraphy proves many arrived from the old world before Columbus.
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 | - Lost civilizations - - Collected and some original essays on Atlantis, life on Mars, ancient civilizations of Earth.
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 | - Secrets of Easter Island - Lost Civilization - - Nova Online: Ever since 1722, when Captain Jacob Roggeveen, a Dutchman and the first European known to have reached Easter Island arrived, scholars have debated the origins of the isolated population he found there. Discusses theories of their origins.
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 | - Unknown Earth - - Weblog of alternitive news stories centering on the origins and nature of the planet.
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