13 marzo 1935 anni - Hidden World (aka In Caverns Below) - Stanton A Coblentz

Descrizione:

Underlying the Basin and Range province of North America, giant caverns, some many miles in diameter, form a network that is occupied by people who have evolved the adaptations (such as pale skin) for living underground. Completely isolated from the upper world, the people have created a civilization that is technologically more advanced than that of 1935 America.

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