The Forgotten Metropolis of Neo-Green Life

The NGL is introduced as a primitivist nation where technology and synthetic materials are banned. Its inhabitants live in harmony with nature, following a strict code that rejects industrial progress. This ideology, however, masks a deeper history. Before the NGL’s founding, the region was home to a modern society with cities, factories, and research facilities. When the movement took power, those structures were abandoned and left to crumble, swallowed by jungle and time. The ruins that Gon, Killua, and Kite encounter are not prehistoric, but rather the remains of a civilization that deliberately chose self-erasure. This irony—a lost city not because it was ancient but because it was intentionally buried—adds a unique twist to the fantasy trope, transforming it from a simple backdrop into a poignant commentary on cultural amnesia.

Location and Discovery

The ruins are situated in the dense forests of the NGL, far from the agrarian villages that now dot the landscape. Kite’s team first stumbles upon them while tracking the Chimera Ant queen. The location is remote, accessible only by traversing treacherous terrain, which explains why the NGL’s current residents rarely encounter the old city. It is here that the queen establishes her nest, using the empty buildings as a birthing ground and the remnants of human technology as a source of genetic material for her soldier ants. The choice is strategic: the ruins provide shelter, raw materials, and a convenient hiding place from the NGL’s rangers, who shun anything associated with the old world. The discovery itself is gradual—first a rusted traffic sign half-buried in moss, then a collapsed overpass, then the skeleton of a skyscraper draped in vines. Togashi masterfully builds an atmosphere of eerie familiarity: the urban decay feels like a ghost of our own world, making the horror more personal.

Architecture and Technological Remnants

The visual depiction of the lost city in both manga and anime emphasizes decay and contrast. Crumbling concrete towers are overgrown with vines; rusted vehicles lie half-buried in mud; shattered glass and twisted metal litter the streets. Yet among the debris, Togashi hints at the sophistication of the civilization that once thrived here. Computer terminals, albeit broken, line the walls of underground laboratories. Flickering screens display garbled data, suggesting that some power sources still function. Advanced medical equipment and genetic research tools are found, which later become crucial for the Chimera Ants’ rapid evolution. The presence of such technology in a region that now bans even simple electronics underscores the NGL’s paradoxical heritage: its very foundation rests on a rejection of the knowledge that built it. In one memorable panel, the characters walk past a faded logo that resembles a biotech corporation—a subtle nod to the kind of corporate overreach that may have contributed to the old society's collapse.

The Paradox of NGL’s Ideology

The NGL’s founders believed that technology bred inequality, violence, and environmental ruin. By erasing all trace of it, they hoped to create a utopia. Yet the existence of the lost city proves that the past cannot be so easily discarded. The ruins are a scar on the landscape, both literal and metaphorical. When the Chimera Ant threat emerges, the NGL’s leadership is paralyzed: their anti-tech dogma leaves them without surveillance, communication, or weapons to combat the invaders. The arc thus poses a critical question: is ignorance a viable defense against the dangers of knowledge, or does it simply create new vulnerabilities? The city, abandoned but still potent, is the physical manifestation of that dilemma. Moreover, the NGL’s rejection of technology mirrors real-world movements like the Amish or radical environmentalists, but Togashi critiques the absolutism of such stances by showing how they can lead to helplessness in the face of existential threats.

Narrative Role and Thematic Resonance

The lost city is more than a setting; it is a narrative engine that drives the Chimera Ant arc’s central conflicts. By giving the ants access to human technology and DNA, it accelerates their evolution into a global threat. Conversely, the ruins serve as a grim reminder of humanity’s own capacity for self-destruction. The NGL’s ideology was a response to the perceived corruption of modern life, yet the hidden laboratories suggest the old civilization was already pursuing dangerous paths—perhaps even experimenting with life forms that could have birthed the very mutation that created the Chimera Ants. This cyclical tragedy is a recurring theme in Togashi’s work: the consequences of unchecked ambition and the illusion of control over nature.

A Stage for Monstrous Evolution

The Chimera Ant queen’s ability to assimilate genetic traits from her prey is uniquely suited to the ruins. She devours small animals and eventually humans, but the real accelerant comes from consuming the remains of scientific experiments stored in the labs. It is implied that the old civilization’s research involved genetic manipulation, perhaps even attempts to create human-animal hybrids. The queen’s offspring, particularly the Royal Guards and Meruem, inherit physical and intellectual traits that far surpass ordinary ants. The city, therefore, becomes a crucible where human curiosity and nature’s adaptability collide, producing a horror that neither the old world nor the new could have anticipated. The rapid evolution of the Chimera Ants mirrors real-world concerns about genetic engineering and bioterrorism, making the arc feel disturbingly plausible. Even the architecture of the ruins—with its sterile labs and hidden containment rooms—suggests a history of playing god, a theme that Togashi explores without moralizing.

The Rejection of Technology and Its Consequences

As the Chimera Ant crisis unfolds, the NGL’s anti-technology stance becomes a fatal weakness. The rangers are equipped only with wooden spears and primitive tools, unable to even photograph the ants for intelligence gathering. Meanwhile, the ants themselves utilize the city’s leftover tech—a functioning radio tower lets them coordinate attacks; medical databases help them understand human biology. The contrast highlights the danger of ideological purity when confronted with complex threats. Togashi does not advocate for unrestrained technological progress, but he suggests that outright denial of the past leaves a society vulnerable. The lost city thus serves as a cautionary tale about the cost of forgetting, a theme that resonates with historical examples like the fall of the Roman Empire or the Khmer Rouge’s destruction of intellectual culture.

The Cycle of Hubris

Togashi’s work often circles back to the idea that hubris precedes catastrophe. In Yu Yu Hakusho, the villain Sensui is driven by a warped sense of justice born from human cruelty; in Hunter x Hunter, the Chimera Ant queen’s ascent is fueled by leftover human ambition. The lost city is the physical embodiment of that hubris—a society that believed it could control life itself, only to be erased by its own creations. The irony is that the NGL, in its attempt to reject that hubris, creates an even greater danger by leaving the ruins undisturbed. The cycle suggests that neither technological abandon nor Luddite rejection is a complete answer; rather, it is the understanding and responsible stewardship of knowledge that matters. This philosophical depth elevates the lost city from a mere plot device to a symbol of the series’ core ethical questions.

Real-World Inspirations: Myths of Lost Civilizations

Togashi’s creation of the lost city draws on a deep well of real-world mythology and archaeology. The concept of a highly advanced society that vanished—either through catastrophe, hubris, or deliberate concealment—has fascinated humanity for millennia. Several key legends and historical sites parallel the NGL ruins, and examining them reveals how Hunter x Hunter modernizes these ancient narratives.

Atlantis: The Submerged Utopia

The most famous lost civilization, Atlantis was described by Plato as a naval power that sank into the ocean in a single day and night of misfortune. Its advanced technology and sudden disappearance echo the NGL’s old world, which similarly possessed remarkable scientific capabilities and then was “sunk” by a cultural revolution. Both stories warn of the dangers of moral decay and overreaching ambition. In Hunter x Hunter, the ants’ development within the ruins mirrors the Atlanteans’ supposed corruption—progress without ethics leading to annihilation. The parallel is especially striking when one considers that Plato framed Atlantis as a cautionary tale about the decline of a once-great civilization, much like the hidden narrative of the NGL ruins.

El Dorado and the Lure of Forbidden Knowledge

The legend of El Dorado, a city of immeasurable wealth hidden in the South American jungle, shares the theme of a secret metropolis known only through whispers. While the NGL ruins are not made of gold, their value lies in the dangerous knowledge they contain. The way human characters are drawn to them—whether out of curiosity, greed, or a sense of duty—parallels the real-world expeditions that searched for El Dorado, often meeting with disaster. This parallel intensifies the sense of tragic inevitability in the arc. Unlike the conquistadors who sought riches, the Hunters seek truth, but they too must confront the consequences of uncovering what was hidden. The ruins become a mirror for the human drive to explore, for better or worse.

Angkor Wat and the Jungle-Claimed City

The real-world Angkor Wat in Cambodia is a massive temple complex that was gradually reclaimed by the jungle after the Khmer Empire declined. Its rediscovery in the 19th century revealed an advanced hydraulic engineering system and sophisticated architecture. The imagery of stone corridors overtaken by roots and moss directly parallels the NGL ruins, where nature has swallowed human industry. Both evoke a sense of sublime decay—beauty in ruin—and a reminder that no structure is permanent. Togashi likely drew on such imagery when designing the overgrown skyscrapers and vine-draped streets. The contrast between the grandeur of the old city and the primitive life that now surrounds it creates a powerful visual metaphor for the ephemeral nature of power.

The Dark Continent and Pre-Human Legacies

A deeper layer of inspiration may come from the series’ own expanded universe. The Dark Continent is a vast, uncharted landmass where ancient, non-human civilizations are said to exist. Some fans theorize that the NGL ruins are not solely human in origin; the advanced genetic research could stem from technology left behind by a pre-human species that once inhabited the known world. This idea draws on real-world pseudoscientific theories like ancient astronauts or pre-human advanced cultures, which Togashi often weaves into his narrative to blur the line between science fiction and myth. The lost city thus becomes a node in a larger network of mysteries, linking the Chimera Ant arc to the series’ overarching lore about the Dark Continent, the Five Great Threats, and the enigmatic “Calm Sea” that separates the known world from the unknown.

Fan Theories and Unanswered Questions

The deliberate ambiguity of the lost city has spawned a wealth of fan speculation. Togashi never provides a complete history of the old civilization, leaving its exact nature, its downfall, and its connection to larger mysteries tantalizingly open. This interpretive space is fertile ground for theories that extend beyond the Chimera Ant arc into the overarching lore of Hunter x Hunter.

Is the Lost City a Relic of the Dark Continent?

The most persistent theory suggests that the NGL ruins are merely a fragment of a much older, continent-spanning civilization that originated in the Dark Continent. The genetic experiments found there could be remnants of the same technology that created the Chimera Ants in the first place—perhaps even the means by which the queen originally mutated. This would tie the seemingly local crisis to the global-scale threats that await in the unexplored world beyond the known map. If true, the lost city functions as a prelude, warning humanity that it is not the first intelligent species to toy with forces it cannot control. The theory gains traction from the fact that the Chimera Ant queen is herself a creature from the Dark Continent, brought to the known world by a rogue ship. Her choice to nest in the ruins may not be random; she may have been drawn to a place with residual energy or genetic material from her homeland.

The Connection to Don Freecss’s Journey

Don Freecss, the ancestor of Gon, is a legendary Hunter who wrote a travelogue about the Dark Continent. His writings describe wonders and horrors that echo the technology found in the NGL labs. Some fans propose that Don himself visited the NGL region centuries ago and that the old civilization was built around his discoveries. The ruins would then be a link between the Freecss lineage and the overarching secret of the world, turning the lost city into a waypoint on a grander quest that spans generations. While this remains speculative, it deepens the significance of the setting beyond a simple monster nest. If Don Freecss’s journal ever comes into full focus in future chapters, the lost city could be retroactively identified as a key location in his travels, giving new meaning to the Chimera Ant arc.

The Lost City as a Containment Measure

Another fan theory holds that the old civilization deliberately designed the city to contain dangerous experiments. The advanced security systems, the underground labs, and the queen’s subsequent takeover could all be part of a plan gone wrong. Perhaps the NGL ruins are not merely abandoned, but sealed—a prison for biological weapons that the old world created and then tried to bury. The Chimera Ant queen’s entry would then be the final failure of that containment. This theory adds a layer of horror: the lost city was never meant to be found, and its discovery triggers a catastrophe that the old world tried to prevent. It aligns with the series’ recurring theme of unintended consequences, where even the best intentions lead to disaster when knowledge is mishandled.

Unanswered Questions: What Really Happened?

Despite the rich speculation, Togashi leaves several crucial mysteries unsolved. Why did the old civilization fall? Was it internal conflict, an environmental catastrophe, or the deliberate decision to abandon technology as the NGL later did? What was the nature of the genetic research—was it purely scientific, or were there ethical violations that led to revolt? And perhaps most tantalizingly, are there other such lost cities scattered across the known world, waiting to be discovered? The narrative deliberately withholds closure, forcing readers to confront the same uncertainty that the characters face. This ambiguity is a hallmark of Togashi’s storytelling, respecting the audience’s intelligence while leaving room for ongoing interpretation.

Why Lost Cities Captivate Us

The enduring appeal of lost cities, whether in Hunter x Hunter or in real-world legends, lies in their dual nature as monuments to human achievement and warnings of impermanence. They remind us that even the mightiest societies can vanish, yet they also tantalize with the hope that some forgotten knowledge might be recovered. Togashi exploits this dichotomy masterfully, using the NGL ruins not just as a backdrop for action but as a thematic mirror that reflects the series’ core questions about power, ethics, and the cost of progress. As fans continue to theorize and await new chapters, the lost city remains a potent symbol of everything that Hunter x Hunter does best: inviting us to look deeper, question everything, and never assume that the surface tells the whole story.

In a world where the Chimera Ant arc stands as one of the most acclaimed storylines in modern anime and manga, the lost city is more than a plot point—it is a narrative anchor that connects human hubris to natural evolution, and ancient myths to contemporary fears. Whether it ultimately reveals a Dark Continent connection or remains an isolated mystery, its role in the story is secure: a crumbling monument to the fact that progress, like a lost city, can be both a wonder and a warning.