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- S1.E1 ∙ Gibraltar
- S1.E2 ∙ Sweden
- S1.E3 ∙ Switzerland
- S1.E4 ∙ Kingdom of Salt
- S1.E5 ∙ Bouzincourt
- S1.E6 ∙ City of Naours
- S1.E7 ∙ Jersey War Tunnels
- S1.E8 ∙ The Maginot Line
- S1.E9 ∙ Edinburgh Vaults
- S1.E10 ∙ Dover War Rooms
- 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
Underground Marvels (2019)
- Genres: Documentary
- Released: 2019
- Directors:
- Casts: Chris Jarman, Jason Desporte
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