DescriptionKircher Mundus Subterraneus fire canals.jpg Illustration of underground fire canals and the interior of Earth from Athanasius Kircher's Mundus Subterraneus...
DescriptionKircher, Athanasius — Mundus Subterraneus — Subterraneus Pyrophylaciorum - (colored) — 1668.jpg Subterraneus Pyrophylaciorum (Fire canals), illustration...
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