The Vespasianus Titus Tunnel is a 2,000-year-old engineering marvel – a massive tunnel dug through a mountain that was built to divert the floodwaters threatening the harbor near the ancient city of...
Beneath the surface of our world, hidden under layers of soil, stone, and history, lie remnants of ancient civilizations - vast networks of tunnels, expansive underground cities , and complex...
There are a surprising number of underground tunnels in the world, but one of the most mysterious examples is the underground tunnels of Rajasthan, India. According to historians, these tunnels are a...
Underground structures, and sometimes even entire cities, have always been part of myths and religions around the world. While a few of these have been discovered, most of them have not. Alongside...
An amateur explorer has released a video of himself exploring a hitherto lost underground “souterrain” chamber. But the journey he filmed inside this strange place is not for the claustrophobic among...
Ancient and colonial sources speak of an extensive underground labyrinth of caves and tunnels, considered by the ancient Zapotec to be a physical entrance into the Underworld of Lyobaa , located...
Tierradentro is a national archaeological park in Colombia. Within the Tierradentro Park are structures known as hypogea as well as stone statues. This unique South American site gives visitors a...
Rome's famous 2,000-year-old Colosseum has a vast underground world called the “hypogeum” and it’s now open to the public for the first time. The Colosseum, or Flavian Amphitheater, was a gigantic...
At one time a cathedral, later a mosque, and now the chief museum of the Turkish Republic, Hagia Sophia, in the ancient Byzantine imperial capital of Constantinople (now Istanbul), was a world-famous...
Setting this discovery in context, an article on the National Trust website declares that in 2006, the Cornwall and West Devon mining landscape achieved World Heritage Status recognized by UNESCO and...
The Chislehurst Caves are a series of subterranean tunnels , man-made rooms, and caverns located in the southeastern part of Greater London . Although the history of the caves stretches back much...
Researchers reporting in Current Biology on November 19 have found that a vast array of regularly spaced, still-inhabited ancient termite mounds in northeastern Brazil are up to about 4,000 years old...
Many stories have been told about hidden underground cities or realms. Examples from fiction include the underground compound inhabited by the Morlocks in H.G. Well’s, The Time Machine and the...
What seems to be a long-lost ancient Roman Theater has been unearthed next to Jerusalem's Western Wall. The archaeological dig under Wilson’s Arch also revealed eight previously unknown layers of...
An erdstall is a type of tunnel that is found throughout Europe, mainly in the south-eastern German state of Bavaria and Austria. Erdstalls are thought to have been created during the Middle Ages,...
The ancient monastery of Mont Sainte-Odile in the French region of Alsace is steeped in mystery. From secret tunnels to the strange disappearance of more than 1,000 ancient books, it has many a story...