
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.

A mysterious tunnel, colonial ruins and warrior cemeteries are exposed.

Underground chambers, medieval tombs, old ruins and fossils are uncovered.

Old Tombs, buried coins, and a 4,000-year-old oak log coffin are discovered.

A buried ship, wartime cellars, jar burials and mass graves are excavated.