A Resident In Turkey Knocked Down A Wall And Discovered Derinkuyu, An Underground City 85 Meters Deep, Capable Of Hosting 20,000 People And Equipped With Wineries, A Chapel, And A Ventilation System
In a small town in Turkey, a simple home repair in the 1960s ended up revealing one of the most impressive archaeological discoveries of the century. By knocking down a wall, a resident found what seemed to be a tunnel, but was actually the entrance to an entire city hidden beneath the ground.
Now known as Derinkuyu, this underground city is a true labyrinth with dozens of corridors, rooms, and tunnels that descend to a depth of 85 meters. And most surprisingly, it was able to house around 20,000 people, along with their animals and food supplies.
A Refuge Lost In Time
Located in the Cappadocia region, famous for its rock formations and colorful balloons, Derinkuyu was carved out of soft volcanic rocks known as “tuff,” ideal for manual excavations. Although its exact origin is a mystery, it is believed that the first galleries were opened more than 2,800 years ago, possibly by the Phrygians, an ancient people of Anatolia.
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Over the centuries, the site was expanded and used by various civilizations. During the Byzantine period, it served as a refuge against Arab invasions and other threats. The structure included houses, schools, barns, wineries, stables, kitchens, and even a subterranean chapel. All connected by narrow corridors and giant stone doors that could be closed from the inside to prevent the entry of invaders.
High-Level Ancient Engineering
More than a refuge, Derinkuyu was an impressive example of ancient engineering and urban planning. Its tunnels extend through 18 interlinked levels and featured a ventilation system with over 50 ducts, ensuring fresh air even dozens of meters deep.
There were also water wells isolated from possible external contamination, as well as a sophisticated system for collecting and storing food. The city was so well-designed that it could sustain its inhabitants for weeks or even months if they needed to hide from enemies.
Archaeologists believe that Derinkuyu was part of an even larger network of underground cities in Cappadocia, connected by tunnels extending for kilometers. To this day, many of these passages remain unexplored.

Rediscovery And Legacy
The modern rediscovery occurred in 1963 when a resident of Derinkuyu decided to renovate his house and knocked down a wall. Behind it, he found a corridor that led to an unknown underground complex. From there, archaeologists began excavations that revealed the grandeur of the lost city.
Today, Derinkuyu is a tourist attraction open to the public, with about eight levels accessible for visitation. It is estimated that only a fraction of the total city has been excavated — the rest remains below ground, holding secrets of ancient civilizations.
In addition to its historical value, the site also inspires modern researchers and engineers, who study how ancient peoples managed to create such efficient ventilation and supply systems without the use of modern technology.
A Mystery That Remains Alive
The underground city of Derinkuyu remains shrouded in mystery. Who built it? How many people actually lived there? And most intriguingly: what drove these civilizations to seek refuge beneath the earth?
Whether out of fear, military strategy, or simple survival, Derinkuyu is proof that humans have always found creative ways to adapt to the challenges of the world. A reminder that, even beneath our feet, there are still entire stories waiting to be discovered.

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