What are the mysterious tunnels in Europe?

Learn with Us! These unexplained passages number in the thousands, and are located in a mix of European countries. There are around 2,000 known erdstall tunnels throughout Europe, with the highest concentrations in Bavaria (some 700), and Austria (another 500). They have also been found in France and Great Britain.



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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, though some have claimed that these tunnels date to the Stone Age.

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There are a large number of tunnels in the Alps of Central Europe. They have the advantage of providing shorter routes and faster journey times by avoiding narrow, winding routes over mountain passes which may well be affected by winter conditions.

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Neglected tunnels aren't only an urban phenomenon. California is pocked with discarded underground pathways created during the Gold Rush, like the Burro Schmidt tunnel in the Mojave Desert. There are 47,000 abandoned mines in the Golden State alone.

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Derinkuyu (also known as Elengubu, Cappadocian Greek: ?a?a??p? Malakopi; Turkish: Derinkuyu Yeralti Sehri) is an ancient multi-level underground city near the modern town of Derinkuyu in Nevsehir Province, Turkey, extending to a depth of approximately 85 metres (280 ft).

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The cities of Özkonak, Derinkuyu, and Kaymakli in Cappadocia, Turkey, are some of the most complete (and most underground) of our underground cities. Denrikuyu is estimated to have once been capable of housing 20,000 people, and actually connects to Kaymakli via an underground tunnel, eight kilometers long.

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The first tunnel built whose engineer is known was excavated in the island of Samos. The engineer Eupalinos de Megara, built this tunnel in the 530 b.C to supply with water the capital of the island and was, with its 1 km length, considered as one of the three marvels of the helenic world.

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The Catacombs of Paris is an underground ossuary in Paris that houses the remains of nearly six million people. Back in 1786, the entire underground population of Paris' cemeteries was relocated to quarry tunnels outside the city limits. Visitors can now explore the caverns and tunnels where the bodies were relocated.

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