01. Underground Cities and Secret Chambers
In Midyat, Turkey, archaeologists uncover the vast underground city of Matiate, stretching across tunnels and chambers carved thousands of years ago.
02. Crystal Cathedrals and Buried Bunkers
In Poland, miners uncovered vast salt chambers known as the Crystal Caves, filled with massive halite crystals formed millions of years ago.
03. Hidden Hypogeum and Lost Letters
In Naples, Italy, a centuries-old tomb at the Santa Maria la Nova monastery may conceal the body of Vlad the Impaler, the prince who inspired the legend of Dracula.
04. Tunnels and Tombs
In Florida, construction workers uncover a brick-lined tunnel system beneath a historic neighborhood.
05. Labyrinths and Legends
In 1924, construction crews in Washington, D.C. uncovered a labyrinth of tunnels beneath Dupont Circle.
06. Subterranean Secrets and Forgotten Foundations
In Italy, explorers uncover an immense tunnel system, revealing a vast subterranean world once thought to be catacombs or escape routes.
07. Buried Battleship and Viking Victims
In New York City, construction of the Freedom Tower uncovers an old ship buried beneath the ground.
08. Bones Beneath and Coffins & Coins
In Jordan, archaeologists make a stunning find: a sealed tomb containing 12 undisturbed skeletons dating to the height of Nabataean civilization.
09. Subterranean Seoul and Railway Revealed
In Seoul, South Korea, workers uncover a massive underground chamber hidden beneath the CitiStar Mall and the subway’s Line 2.
10. Secret School and Concealed Castle Cemetery
In Denmark, metro construction workers uncover a mysterious 19th-century wood-lined tunnel.