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Secrets of the Underground
IMDb 6.520178 集
免费试享 Discovery+
集数
- 第 1 季第 1 集 - Capone's Escape Tunnels2017年2月13日42 分钟Rob Nelson investigates rumors of a secret, underground escape route used by the infamous gangster Al Capone in Louisville, KY. Also, the Mima mounds in Washington State are explored.免费试享 Discovery+
- 第 1 季第 2 集 - Mystery of the Serpent Mound2017年2月20日42 分钟Rob Nelson explores mysterious tunnels beneath Denver's airport, capitol building, and downtown to investigate rumors of a secret organization. Also, the ancient secrets of a giant mound shaped like a serpent are investigated.免费试享 Discovery+
- 第 1 季第 3 集 - America's Buried Massacre2017年2月27日42 分钟Rob Nelson hunts for a legendary mass grave that could expose a dark secret from America's industrial past. Also, cutting edge technology is used to find out why a giant lake in Virginia suddenly vanished.免费试享 Discovery+
- 第 1 季第 4 集 - Rocky Mountain Monsters2017年3月6日42 分钟Rob Nelson examines a set of bizarre markings on a Colorado ridge that suggest a violent clash between prehistoric beasts. Also, an ancient California lake is investigated to see if it's home to alien life.免费试享 Discovery+
- 第 1 季第 5 集 - Great Lakes Bermuda Triangle2017年3月13日42 分钟Rob Nelson descends into a Texas cave to uncover ancient remains of an unknown, mass extinction. Also, a phenomenon that's caused ships to disappear for centuries in the placid waters of Lake Michigan is investigated.免费试享 Discovery+
- 第 1 季第 6 集 - California's Hidden Doomsday2017年3月20日42 分钟Rob Nelson heads to California to investigate a network of major fault lines that could set off a massive earthquake. Also, a mysterious sinkhole is explored that some believe is a portal to the center of the Earth.免费试享 Discovery+
- 第 1 季第 7 集 - History of the New World2017年3月27日42 分钟Rob Nelson investigates a cluster of ancient ruins that suggest Europeans arrived in North America almost 1,000 years before Columbus. Also, a dormant supervolcano may be showing new signs of life.免费试享 Discovery+
- 第 1 季第 8 集 - American Stonehenge2017年4月3日42 分钟Rob Nelson uses state-of-the-art technology to search for rumored escape tunnels deep beneath Alcatraz. Also, a mysterious pattern of rocks is investigated at the bottom of Lake Michigan.免费试享 Discovery+