Name: Hidden Beneath the Cities
Released: 2026-02-25T00:00:00.000Z
Cast: Jeff Teravainen

TV Show · Documentary

Uncovers the extraordinary worlds that exist beneath major urban centers, from the tombs and wartime shelters of Naples to the manmade Royston Cave in Hertfordshire, England.

2026 · 44m

Starring Jeff Teravainen

EPISODE 1

Underground Cities and Secret Chambers

Scientists uncover a city, a chamber, and a complex, and map a tunnel network.
EPISODE 2

Crystal Cathedrals and Buried Bunkers

Scientists uncover salt chambers, bunkers, old kingdoms, and mysterious caves.
EPISODE 3

Hidden Hypogeum and Lost Letters

Archaeologists find a tomb, a haunting cave, and a sophisticated labyrinth.
EPISODE 4

Tunnels and Tombs

Explorers discover tunnel systems, a sprawling city, and military barracks.
EPISODE 5

Labyrinths and Legends

Volunteers unearth tunnel systems, and a sealed burial tomb is found.
EPISODE 6

Subterranean Secrets and Forgotten Foundations

Explorers find a tunnel system, mass graves, city foundations, and longhouses.