Kaymaklı Underground City

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Maria Faith Saligumba

The Underground City Built During the Cold War — and Still Intact Today

Maria Faith Saligumba

Imagine standing on a quiet hillside, unaware that beneath your very feet lies a secret world carved out of solid rock—a world built in utter secrecy, fueled by fear, and designed to outlast disaster. The Cold War was an era of anxiety, ingenuity, and sometimes, astonishing over-preparation. Across the globe, in lands both familiar and remote, governments dug deep, creating not just bunkers but entire cities capable of sustaining life far from the surface. One such underground marvel, still remarkably preserved today, tells a story of human resilience, paranoia, and the extraordinary lengths people once went to for survival. Step with me into the chilling, awe-inspiring depths of the underground city—a place built for a world that, thankfully, never ended.

A World Built on Fear: The Cold War Mindset

A World Built on Fear: The Cold War Mindset (image credits: unsplash)
A World Built on Fear: The Cold War Mindset (image credits: unsplash)

The Cold War wasn’t just a battle of weapons or ideologies; it was a psychological standoff that influenced every aspect of society. Governments, convinced that nuclear war was imminent, poured resources into preparation. The threat wasn’t abstract—it was personal. Families practiced “duck and cover” drills, and leaders debated how to save civilization itself. This climate of fear pushed countries to imagine the unimaginable: entire cities, hidden underground, where life could continue if the surface became uninhabitable. The result was a blend of ingenious engineering and chilling necessity—a testament to both human vulnerability and determination.

Choosing the Perfect Location

Choosing the Perfect Location (image credits: unsplash)
Choosing the Perfect Location (image credits: unsplash)

Selecting the right spot for an underground city meant balancing security, secrecy, and practicality. Remote hillsides, mountain ranges, and regions with stable geology were favored, keeping these cities hidden from prying eyes and safe from enemy attack. The land had to be strong enough to support massive excavation, yet accessible enough for supplies and construction equipment. One famous site, for instance, was nestled beneath a quiet pastoral landscape, with only a few innocuous buildings hinting at what lay below. The very earth became a cloak, shielding the city from the world—and the world from its secrets.

Digging Deep: The Engineering Challenge

Digging Deep: The Engineering Challenge (image credits: unsplash)
Digging Deep: The Engineering Challenge (image credits: unsplash)

Creating a city underground wasn’t just a matter of digging a big hole. Engineers faced daunting challenges: How do you keep tunnels from collapsing? How do you ventilate miles of passageways? Teams of experts—geologists, architects, and military planners—worked around the clock, using explosives, reinforced concrete, and steel beams to carve out vast chambers. They devised systems to manage water, control temperature, and filter air, transforming cold stone into a livable, if eerie, environment. It’s a feat of engineering that still impresses today, decades after the last hard hat left the site.

Living Spaces Hidden from the Sun

Living Spaces Hidden from the Sun (image credits: unsplash)
Living Spaces Hidden from the Sun (image credits: unsplash)

Inside the underground city, residents were shielded from the chaos above—but also from sunlight, fresh air, and the rhythms of normal life. Designers created dormitories, kitchens, and communal spaces, all buried beneath meters of rock. Walls were painted bright colors to lift moods, and artificial lighting mimicked the day-night cycle. Even so, the air was tinged with a faint mineral scent, and the silence, broken only by the hum of generators and the distant drip of water, could feel haunting. Here, comfort was measured in survival, not luxury.

Essential Infrastructure: Power, Water, and Air

Essential Infrastructure: Power, Water, and Air (image credits: unsplash)
Essential Infrastructure: Power, Water, and Air (image credits: unsplash)

No city, above or below ground, can function without the basics. In these subterranean worlds, self-sufficiency was paramount. Massive diesel generators or even small nuclear reactors provided electricity, while deep wells tapped into underground aquifers for water. Air was filtered and circulated through labyrinthine ducts, with backup systems in case of failure. Engineers had to think of everything—from sewage treatment to food storage—because once sealed, the city had to survive on its own for months, even years. Every pipe, wire, and vent was a lifeline.

Command Centers and Communication Rooms

Command Centers and Communication Rooms (image credits: unsplash)
Command Centers and Communication Rooms (image credits: unsplash)

At the heart of the underground city were the command centers: rooms bristling with radios, telephones, and maps. Here, military leaders and government officials could direct operations, coordinate with the outside world, or, if necessary, wage war from below. These nerve centers were shielded by layers of concrete and steel, impervious to all but the most direct hits. Communication lines snaked through tunnels, connecting the city to distant outposts. In the event of catastrophe, this was where decisions would be made—and history would be written anew.

Medical Facilities Below Ground

Medical Facilities Below Ground (image credits: unsplash)
Medical Facilities Below Ground (image credits: unsplash)

The planners of underground cities knew that disaster doesn’t pause for emergencies. Medical clinics were built deep underground, stocked with supplies, beds, and even small operating theaters. Doctors and nurses trained for life in confined, artificial environments, ready to treat everything from minor injuries to radiation sickness. These hospitals had to be self-contained, with their own power, water, and ventilation systems. For those living below, health care was a constant concern—a reminder that even in a fortress, humans are fragile.

Food Storage and Rationing Systems

Food Storage and Rationing Systems (image credits: wikimedia)
Food Storage and Rationing Systems (image credits: wikimedia)

Feeding an underground population meant planning for every calorie. Vast storerooms held canned goods, dried foods, and water tanks, all carefully inventoried and rationed. Kitchens were equipped with industrial stoves and massive freezers, but menus were limited and repetitive. Nutrition took precedence over flavor, and every scrap was precious. Gardens of sprouting potatoes or beans, grown under artificial lights, were a rare treat. For many, the smell of baking bread or brewing coffee became a cherished reminder of life above.

Psychological Survival: Coping with Isolation

Psychological Survival: Coping with Isolation (image credits: unsplash)
Psychological Survival: Coping with Isolation (image credits: unsplash)

Life underground was not just a physical challenge, but a mental one. Cut off from the sun, the seasons, and the outside world, residents faced boredom, anxiety, and even depression. Psychologists advised on the design of living quarters, incorporating games, books, and communal activities to keep spirits up. Radios played music, and makeshift theaters staged performances. Yet, for all the distractions, the reality of confinement weighed heavily. The city’s planners knew that morale was as crucial as any ration or filter.

Children and Families in the Depths

Children and Families in the Depths (image credits: unsplash)
Children and Families in the Depths (image credits: unsplash)

Some underground cities prepared for the presence of entire families, including children. Special quarters were set aside for parents and kids, and schools operated in repurposed conference rooms. Teachers created lessons about geology, history, and survival, turning the city itself into a living classroom. Playrooms, though small and windowless, echoed with laughter—a testament to children’s resilience. For many, growing up underground was an adventure tinged with fear and fascination, forever shaping their view of the world.

Security and Surveillance Underground

Security and Surveillance Underground (image credits: unsplash)
Security and Surveillance Underground (image credits: unsplash)

Safety was paramount in a world built to withstand attack. Security teams patrolled corridors, monitored cameras, and checked ID badges. Some cities were protected by blast doors weighing tons, designed to seal shut in seconds. Alarms systems guarded against intruders, and backup plans covered every conceivable emergency—from fire to sabotage. In this closed environment, trust was vital, but vigilance never slept. Every locked door and watchful eye was a reminder of the danger beyond.

Hidden Passageways and Escape Routes

Hidden Passageways and Escape Routes (image credits: unsplash)
Hidden Passageways and Escape Routes (image credits: unsplash)

No fortress is complete without an escape plan. Hidden tunnels branched off from the main city, leading to secret exits miles away. These passageways, dark and narrow, were designed for stealthy departures or emergency evacuations. Maps of these routes were closely guarded secrets, known only to a handful of trusted leaders. In drills, residents practiced slipping away silently, ready to vanish if discovery or disaster struck. The knowledge that escape was possible, however slim, offered a sliver of hope.

Preserving Culture and Knowledge Underground

Preserving Culture and Knowledge Underground (image credits: unsplash)
Preserving Culture and Knowledge Underground (image credits: unsplash)

Even in the midst of crisis, the guardians of the underground city valued more than survival—they sought to preserve culture. Libraries were stocked with books, art, and historical documents. Musicians brought instruments, and artists painted murals on concrete walls. Special vaults protected scientific data, government records, and even seeds for future crops. This commitment to memory and meaning set the underground city apart from a mere bunker; it was a lifeboat for civilization itself.

Nature’s Persistent Presence

Nature’s Persistent Presence (image credits: unsplash)
Nature’s Persistent Presence (image credits: unsplash)

Despite all efforts to control the environment, nature found its way underground. Drops of water seeped through cracks in the rock, supporting patches of moss or stubborn fungi. Occasionally, insects or small animals wandered in, seeking warmth. Engineers fought back with dehumidifiers and pest control, but the battle was ongoing. These living reminders of the surface world were both nuisance and comfort—a whisper that life, in some form, persisted.

Technological Innovations Born Below

Technological Innovations Born Below (image credits: unsplash)
Technological Innovations Born Below (image credits: unsplash)

Necessity is the mother of invention, and nowhere was this truer than in the underground city. Engineers developed new ways to recycle air, conserve water, and minimize waste. Innovations in filtration and radiation shielding, pioneered here, eventually found their way to space stations and submarines. The need to do more with less drove creativity, turning the city into a laboratory for survival technology. Many of these advances still influence science and engineering today.

Rumors, Legends, and Urban Myths

Rumors, Legends, and Urban Myths (image credits: unsplash)
Rumors, Legends, and Urban Myths (image credits: unsplash)

Over the years, stories about the underground city grew wild and strange. Locals whispered about ghostly lights, hidden treasures, and top-secret experiments. Some claimed the tunnels stretched for hundreds of miles, connecting to other secret sites. Others spoke of mysterious disappearances or coded messages. While much of this was pure fantasy, the secrecy surrounding the city fueled imagination. In a way, the myths became part of the city’s legacy—a hidden world always just out of reach.

Revelations after the Cold War

Revelations after the Cold War (image credits: unsplash)
Revelations after the Cold War (image credits: unsplash)

When the Cold War ended, the need for secrecy faded. Governments declassified documents, and former workers shared their memories. Journalists and historians descended, documenting every detail of the underground city. What they found was both awe-inspiring and sobering: a monument to fear, hope, and the human capacity for survival. Tours were organized, and parts of the city opened to the public, allowing a new generation to glimpse the past up close. The city’s story, once a closely guarded secret, became part of our shared history.

Preservation Efforts and Modern Use

Preservation Efforts and Modern Use (image credits: unsplash)
Preservation Efforts and Modern Use (image credits: unsplash)

Today, the underground city stands as a unique historical site. Preservationists work tirelessly to protect its structures and artifacts, battling the slow creep of decay. Some sections have been repurposed as museums, research labs, or emergency shelters. The city is studied by engineers and planners, eager to learn from its successes and failures. For many, it is a powerful reminder of what people can achieve—and what they fear losing. The city’s continued existence is a testament to both human ingenuity and the enduring shadow of the Cold War.

Lessons for the Future

Lessons for the Future (image credits: unsplash)
Lessons for the Future (image credits: unsplash)

The underground city is more than a relic; it’s a warning and an inspiration. As the world faces new threats—climate change, pandemics, and geopolitical tensions—the idea of self-sufficient, hidden refuges is gaining renewed interest. Architects and scientists look to the past for ideas on how to build resilient communities. The city’s story prompts us to ask hard questions about preparedness, sacrifice, and the value of life itself. Its silent halls echo with the choices of those who came before, urging us to think deeply about the world we want to create.

The Enduring Mystery and Allure

The Enduring Mystery and Allure (image credits: unsplash)
The Enduring Mystery and Allure (image credits: unsplash)

Even now, decades after its creation, the underground city captures the imagination. Visitors describe a sense of awe and unease—the feeling of stepping into a forgotten chapter of history. The city is both monument and maze, a place where every corridor tells a story. Its preservation allows us to touch the past, to feel the weight of old fears and the hope for tomorrow. The city endures, not just as concrete and steel, but as a symbol of what it means to prepare, to endure, and to dream.

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