7.1 Age rating
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Currently you are able to watch "Hidden Beneath the Cities" streaming on Hulu, fuboTV, YouTube TV or for free with ads on National Geographic.
You can also stream the title for free on Spectrum On Demand.
Uncovers the extraordinary worlds lying just below modern urban centers. Beneath the streets of stone, soil and concrete exist hidden realms shaped by survival, ritual and imagination. Uncovers the extraordinary worlds that exist beneath major urban centers, from the tombs and wartime shelters of Naples to the manmade Royston Cave in Hertfordshire, England.
