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In ancient times the idea of subterranean realms was arguable, and intertwined with the concept of places such as Greek Hades, Jewish Sheol?, and Christian Hell. |
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There are two kinds of Hollow Earth theories: Concave Hollow Earth theories and Convex Hollow Earth theories. Convex Hollow Earth theories state that the surface of the planet we live is the external surface of an hollow planet. Concave Hollow Earth theories state that we and all the universe are inside a hollow planet. |
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In 1818 one John Symmes suggested that the Earth was actually a hollow shell about 800 miles thick, with openings at both poles about 1400 miles across. With charming candor he proposed calling the "inner lands" Symzonia. Edgar Allan Poe used the idea in his 1838 The Narrative of Arthur Gordon Pym. |
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In ancient times the idea of subterranean realms was arguable, and intertwined with the concept of places such as Greek Hades, Jewish Sheol?, and Christian Hell. In 1818, John Symmes suggested that the Earth was actually a hollow shell about 800 miles thick, with openings at both poles about 1400 miles across. With charming candor he proposed calling the "inner lands" Symzonia. Edgar Allan Poe used the idea in his 1838 The Narrative of Arthur Gordon Pym. |
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