Secrets of Underground London

Secrets of Underground London

Passport Special | 54m 41s Video has closed captioning.

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

Expires: 06/22/24

Rating: TV-PG

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Problems Playing Video? | Closed Captioning