Subterranean fiction is a subgenre of speculative fiction, which focuses on fictional underground settings, sometimes at the center of the Earth or otherwise deep below the surface. The genre is based on, and has in turn influenced, the Hollow Earth theory.
Subterranean fiction is a subgenre of speculative fiction, which focuses on fictional underground settings, sometimes at the center of the Earth or otherwise deep below the surface. The genre is based on, and has in turn influenced, the Hollow Earth theory.
Source: Wikipedia "Subterranean fiction" · CC BY-SA 4.0
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