Secrets of Underground London

Full Episode

Special | 54m 41s

On the surface, London is a buzzing, modern metropolis—but underneath lies a secret, hidden world, all but forgotten by the millions of people above. This program uncovers 2,000 years of subterranean history: a world of ancient caves and perfectly preserved Roman remains; mysterious rivers and gruesome plague pits; impenetrable vaults and top-secret bunkers.

Aired: 06/22/14

Expired: 04/16/17

Rating: TV-PG

Video has closed captioning.

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