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16 Incredible Underground Cities
Matmata Troglodyte
Houses
Setenil de las Bodegas
Ouplistsikké
Vardzia
Tunnel of Alfonso VIII
Özlüce underground
city
Paris Catacombs
Churches, Wineries and
Underground Kitchens
Underground Naples
Derinkuyu Underground
City
Wieliczka Salt Mine
Özkonak Underground
City
Underground Cellars in
the Center of Aranda de Duero
Kaymakli Underground
City
Historische
Felsengänge (Underground Cellars)
Orthodox Church
Underground
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