Symmes's Theory of Concentric Spheres

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Explore a groundbreaking and controversial theory of the earth's structure in "Symmes's Theory of Concentric Spheres: Demonstrating that the Earth is hollow, habitable within, and widely open about the poles." This intriguing work delves into the fascinating concept of a hollow earth, proposing the existence of concentric spheres within our planet, accessible through polar openings. Inspired by the ideas of John Cleves Symmes, this anonymous text presents a detailed vision of an interior world. Venture into a realm of geological speculation and earth theory as the book meticulously lays out it...