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10 Episodes
S2 E1 - Hotel Bunker of the Apocalypse
S2 E2 - Mystery of the Kentucky Cave
S2 E3 - Cincinnati's Secret Caverns
S2 E4 - Buried Lab of the Black Hills
S2 E5 - Ireland's Underground Alcatraz
S2 E6 - Subterranean Silo Survival
S2 E7 - Italy's Subterranean Secret
S2 E8 - Grand Canyon's Lost Treasure
S2 E9 - Murder Raid Tunnels
S2 E10 - Medieval Maze of Secrets
Streaming, rent, or buy Underground Marvels – Season 2:
Currently you are able to watch "Underground Marvels - Season 2" streaming on Sky Go.
Synopsis
Experts explore mysteries of abandoned subterranean phenomena around the world, sharing their impressive stories, unique origins and the secrets they still keep hidden underground.
