Sunday, December 9, 2018, 10:30-11:30 p.m. ETCheck your local listings
Descend into subterranean London to uncover 2,000 years of history.
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. Digging deep, the program unearths some of the most extraordinary stories of the darkest part of the city.