A sprawling underground city frozen in time beneath the ice
Bajo treinta metros de hielo groenlandés, el tiempo había sepultado uno de los secretos más ambiciosos de la Guerra Fría: una ciudad subterránea construida para albergar doscientas personas, alimentada por un reactor nuclear portátil y abandonada al olvido en 1967. En abril de 2024, un avión de la NASA equipado con radar de penetración glacial redescubrió accidentalmente el Campamento Century durante pruebas de calibración rutinarias, revelando que la historia no siempre se borra, sino que a veces simplemente espera bajo el hielo. El hallazgo nos recuerda que el deshielo ártico no solo transforma el paisaje del presente, sino que también desentierra las ambiciones y los miedos del pasado.
- Un radar diseñado para estudiar glaciares captó una anomalía geométrica perfecta a 30 metros de profundidad, y nadie en el equipo supo al principio qué estaba mirando.
- Lo que emergió de los datos fue una ciudad entera: más de 1,2 kilómetros de túneles interconectados con barracas, laboratorios, capilla, biblioteca y el primer reactor nuclear portátil del mundo.
- La base había sido abandonada hace casi seis décadas porque el entorno ártico la hizo insostenible, pero el hielo la conservó intacta como una cápsula del tiempo de la paranoia nuclear.
- El sistema UAVSAR del Laboratorio de Propulsión a Chorro de la NASA demostró que puede cartografiar instalaciones ocultas bajo el hielo con una precisión que ningún método convencional podría igualar.
- El descubrimiento advierte que el cambio climático está convirtiendo el Ártico en un archivo involuntario: a medida que el hielo retrocede, más secretos de la Guerra Fría podrían salir a la superficie.
En abril de 2024, un avión de investigación de la NASA sobrevolaba el norte de Groenlandia realizando pruebas de calibración con un sistema de radar aerotransportado llamado UAVSAR, capaz de penetrar capas de hielo glacial. De manera casi accidental, los sensores detectaron una gran estructura geométrica enterrada a unos 30 metros de profundidad. Los científicos del Laboratorio de Propulsión a Chorro tardaron un momento en comprender lo que tenían ante sí.
Lo que el radar había revelado era el Campamento Century, una instalación militar subterránea construida por Estados Unidos en plena Guerra Fría y abandonada en 1967. Durante casi seis décadas, la nieve y el hielo habían ido sepultando el complejo en silencio. Pero lejos de ser un simple puesto avanzado, el campamento era una verdadera ciudad subterránea: más de 1,2 kilómetros de túneles interconectados con capacidad para 200 personas, que incluían barracas, un centro médico, laboratorios, una capilla, una biblioteca y áreas recreativas. Para operar de forma autónoma en uno de los entornos más hostiles del planeta, los ingenieros lo equiparon con el PM-2A, el primer reactor nuclear portátil del mundo.
El hallazgo trasciende la curiosidad histórica. Demuestra la capacidad del UAVSAR para cartografiar estructuras ocultas bajo el hielo con una resolución imposible para los métodos convencionales, y al mismo tiempo lanza una advertencia: a medida que el cambio climático acelera el deshielo ártico, otras instalaciones de la Guerra Fría y distintas infraestructuras enterradas podrían emerger del pasado, convirtiendo herramientas como esta en instrumentos esenciales tanto para la ciencia como para la memoria histórica.
In April 2024, a NASA research aircraft was flying over northern Greenland when its radar instruments picked up something unexpected buried deep beneath the ice. Scientists at the Jet Propulsion Laboratory were testing an advanced airborne radar system called UAVSAR—designed to see through glacial ice and map what lies underneath—when the sensors registered a large, geometric structure roughly 30 meters down. At first, the team wasn't sure what they were looking at. The anomaly was clear on the data, but its purpose remained a mystery.
As the researchers dug into their findings, the picture became unmistakable. What they had found was Camp Century, a sprawling underground military installation built by the United States during the height of the Cold War, more than six decades earlier. The base had been abandoned in 1967 and left to be slowly entombed by accumulating snow and ice—a process that had continued uninterrupted for nearly 60 years.
The facility was far more than a simple outpost. Beneath the Greenland ice lay a complex subterranean city: more than 1.2 kilometers of interconnected tunnels and chambers designed to house up to 200 people. Inside were barracks for sleeping quarters, a medical center, laboratories for research, a chapel, a library, and recreation areas. The base was engineered to function as a self-contained Arctic research station and testing ground for military infrastructure and nuclear missile systems. To power this remote installation, engineers had equipped it with the PM-2A, the world's first portable nuclear reactor—a technological marvel that allowed the base to operate independently in one of Earth's most hostile environments.
The discovery itself was almost accidental. NASA scientists had been conducting technical tests and calibration work on the UAVSAR system, a sophisticated polarimetric radar that operates on the L-band frequency. The technology excels at generating detailed images of ice layers and the boundary between glaciers and bedrock. As the aircraft passed over northern Greenland, the radar's sensors penetrated the ice sheet and revealed the unmistakable signature of the buried base—its geometric structures and infrastructure creating a radar signature that stood out against the surrounding ice and rock.
What makes this discovery significant extends beyond historical curiosity. Camp Century represents a tangible piece of Cold War strategy now being exposed by a warming Arctic. The base was closed because the extreme environment and logistical challenges of maintaining such a remote installation proved unsustainable. But the find also demonstrates the power of modern remote sensing technology. The UAVSAR system, developed and operated by NASA's Jet Propulsion Laboratory, can reveal what human eyes and conventional surveys cannot—hidden structures, geological features, and historical artifacts locked beneath ice that has accumulated over decades. As climate change accelerates ice melt across the Arctic, more Cold War-era installations and other buried infrastructure may emerge from beneath the ice, making tools like UAVSAR increasingly valuable for both scientific research and historical documentation.
Notable Quotes
The team initially could not determine the nature of the anomaly detected during the overflight— Alex Gardner, NASA cryosphere researcher
The Hearth Conversation Another angle on the story
Why was a military base built so deep underground in Greenland in the first place?
The Cold War demanded that both superpowers demonstrate technological mastery in extreme environments. Camp Century was partly a test of whether the U.S. could sustain military operations in the Arctic—to house personnel, conduct research, and develop systems that might be needed if conflict extended to polar regions. It was ambition as much as strategy.
And they just left it there when it became impractical?
Yes. By 1967, the logistical costs and the harsh conditions made it untenable. They sealed it and walked away, assuming the ice would keep it buried indefinitely. They were right—until radar technology caught up.
The nuclear reactor troubles me. What happened to it?
The source doesn't detail the reactor's fate after closure. That's actually one of the open questions the discovery raises. Whether it was removed, abandoned, or remains in place is unclear—and potentially significant given environmental concerns.
How does finding it now change anything?
It's a window into Cold War thinking and Arctic engineering. But more immediately, it shows us that climate change is exposing infrastructure we thought safely buried. As ice melts, more sites may surface. We need to understand what's up there.
Could there be other bases like this?
Almost certainly. Camp Century wasn't unique in concept, just in how thoroughly it was forgotten. The discovery suggests we should be looking more carefully at what else might be emerging from the Arctic ice.