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Cappadocia

Yn yr henfyd, Cappadocia neu Capadocia, Twrceg: Kapadokya, Groeg:

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Montezuma Castle National Monument

Montezuma Castle National Monument, located near Camp Verde, Arizona,

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Seattle Underground

The Seattle Underground is a network of underground passageways and

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Zelve Monastery

Zelve Monastery was carved into the rock in pre-Iconoclastic times.

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Setenil de las Bodegas

Setenil de las Bodegas is a town (pueblo) and municipality in the

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Forestiere Underground Gardens

Forestiere Underground Gardens Located at 5021 West Shaw Avenue in

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Amsterdam Dungeon

The Amsterdam Dungeon, in the city of Amsterdam, The Netherlands,

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Комплекс Осувка

Комплекс Осувка - подземный комплекс, считающийся некоторыми исследо

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Kaymaklı Underground City

Kaymaklı Underground City is contained within the citadel of

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Silberbergwerk Schwaz

Das Schwazer Silberbergwerk wurde seit dem Mittelalter betrieben. Es

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Derinkuyu Underground City

Derinkuyu Underground City is located in the homonymous Derinkuyu

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Coober Pedy, South Australia

Mae Coober Pedy yn dre yn Ne Awstralia, Awstralia, gyda phoblogaeth o

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Labyrinth under Vegetable Market, Brno

Labyrinth under Vegetable Market is a system of underground corridors

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Fan Bay Deep Shelter

Fan Bay Deep Shelter is a series of tunnels constructed during World

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Brighton sewers

The city of Brighton in England has an extensive system of Victorian

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Underground City (Beijing)

The Underground City (simplified Chinese: 地下城; traditional Chine