Underground Marvels
2019
6.5
2 Seasons
Documentary
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Overview
Historians, engineers, and experts take a look at the underground structures, systems, and phenomena that exist beneath our feet.
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2x10 - Medieval Maze of Secrets
2021-10-0745m
A forgotten world of ancient underground passages and medieval engineering lies hidden beneath the town of Exeter, England; experts investigate and reveal how this ambitious tunnel system was the result of one of the deadliest epidemics in history.
