Hidden Beneath the Cities

7:00 PM to 8:00 PM

Sunday 28 June

Tunnels and Tombs

Season 1 Episode 4

In Florida, workers uncover a tunnel system beneath a neighborhood. In Italy, the Hypogeum of Cristallini Street opens a window into Hellenistic-era burial practices. In Iran, a man digging a well uncovers a sprawling three-storey underground city. Finally, beneath Rome's Caelian Hill, construction exposes military barracks and a luxury villa

Hidden Beneath the Cities airs on National Geographic Channel HD at 7:00 PM, Sunday 28 June. (New, subtitles.)

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