The Hidden Entrances to Britain’s Secret Network | Underground Marvels | Science Channel

As nations emerged from a brutal second World War, they did so in the new reality of a nuclear threat. Across the country, Britain was bolstering itself against a new enemy, and they headed underground. Explore one of the nation's most important secret networks that was equipped with the latest radar system and large operational bunkers built to withstand a nuclear attack. #ScienceChannel #UndergroundMarvels

About Underground Marvels:
Experts explore mysteries of abandoned subterranean phenomena around the world, sharing their impressive stories, unique origins and the secrets they still keep hidden underground.

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