Hidden Beneath the Cities (Documentary, English)
Status: To Be Determined
Premiered: 2026-04-24
Network: National Geographic
Country: US
Hidden Beneath the Cities uncovers the extraordinary worlds lying just below modern urban centers. Beneath the streets of stone, soil and concrete exist hidden realms shaped by survival, ritual and imagination. Uncovers the extraordinary worlds that exist beneath major urban centres, from the tombs and wartime shelters of Naples to the manmade Royston Cave in Hertfordshire, England.