Science 2019 - 2021 2 季 20 集 TV-PG 未完结

Underground Marvels

2019 - 2021 2 季 20 集 TV-PG

6.8

第 2 季

没有匹配结果

第 1 季

第 2 季

所有分集

42 分钟

S2 · E1 · 2021年8月5日

Hotel Bunker of the Apocalypse 第 1 集

The top-secret construction of a massive nuclear bunker remained concealed under a palatial West Virginia hotel for decades, and now, experts reveal how this vast subterranean structure was one of the most closely guarded Cold War secrets in US history.

42 分钟

S2 · E2 · 2021年8月12日

Mystery of the Kentucky Cave 第 2 集

The longest known cave system in the world spans hundreds of miles beneath the hills of Kentucky, and containing prehistoric artifacts and ancient human remains, experts reveal a subterranean mystery that may have changed the course of U.S. history.

45 分钟

S2 · E3 · 2021年8月19日

Cincinnati's Secret Caverns 第 3 集

Deep beneath the streets of Cincinnati lies a network of deserted tunnels and caverns that contain a remarkable history of the city's origins, and now, experts investigate to reveal who built this underground labyrinth and why it was abandoned.

42 分钟

S2 · E4 · 2021年8月26日

Buried Lab of the Black Hills 第 4 集

Buried nearly a mile beneath the Black Hills of South Dakota is a cutting-edge laboratory at the forefront of astonishing scientific research; experts reveal advancements engineers achieved more than a century ago that keep it operating today.

42 分钟

S2 · E5 · 2021年9月2日

Ireland's Underground Alcatraz 第 5 集

Subterranean military fortresses situated on the southern coast of Ireland have protected against enemy invasion for over 400 years, and now, experts investigate how this powerful stronghold transformed into a brutal and terrifying prison.

42 分钟

S2 · E6 · 2021年9月9日

Subterranean Silo Survival 第 6 集

Experts investigate a decommissioned underground missile launch facility.

42 分钟

S2 · E7 · 2021年9月16日

Italy's Subterranean Secret 第 7 集

An unprecedented landslide unveils a hidden world beneath a picturesque town in northern Italy, and now experts investigate this vast network of tunnels and passageways that stretch 300 feet underground to reveal the city's subterranean past.

42 分钟

S2 · E8 · 2021年9月23日

Grand Canyon's Lost Treasure 第 8 集

Descending more than 200 feet beneath the Arizona bedrock lies the largest dry cave system in North America; experts explore this vast subterranean network to reveal the mysteries and undiscovered treasure that remain hidden within its walls.

41 分钟

S2 · E9 · 2021年9月30日

Murder Raid Tunnels 第 9 集

Experts explore an extensive network of tunnels beneath Ramsgate, England.

42 分钟

S2 · E10 · 2021年10月7日

Medieval Maze of Secrets 第 10 集

A forgotten world of ancient underground passages and medieval engineering lies hidden beneath the town of Exeter, England; experts investigate and reveal how this ambitious tunnel system was the result of one of the deadliest epidemics in history.

第 2 季共 10 集

部分信息来自 TheTVDB。

Underground Marvels