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    Underground Marvels
    Underground Marvels
    Documentary

    Underground Marvels

    Historians, engineers, ​and experts take a look at the underground structures, systems, and phenomena that exist beneath our feet.

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    Created By

    Status

    Returning Series

    Original Name

    Underground Marvels

    First Air Date

    October 17, 2019

    Last Air Date

    October 7, 2021

    Seasons

    2

    Episodes

    20

    Language

    English

    Production Companies

    Phoenix TelevisionTCB Media Rights

    Networks

    ScienceU&Yesterday

    Medieval Maze of Secrets
    S02E10

    Medieval Maze of Secrets

    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.

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