City of the Living Flame

In Short

This fast-paced science fiction novella follows an Earthman named Jim Landor who travels to the Martian polar cap in search of his lost brother. He stumbles upon the legendary, subterranean city of M’Tonak, only to find it controlled by an eldritch, multi-dimensional entity that feeds on human minds. To survive, Landor and a group of stranded explorers must outmaneuver both the entity and a cryptic, ancient Martian gatekeeper. It is a classic example of 1940s pulp adventure, focusing on high-stakes ingenuity and the terrifying power of an alien consciousness.

The Story

Jim Landor pilots his rocket-plane to the remote Martian polar region, ignoring the warnings of his peers. He is haunted by the disappearance of his brother, Frank, and driven by rumors of M’Tonak, a city said to hold a treasure of immense value. Upon arrival at the mining outpost of Riida, Landor joins a small expedition led by the affable Conley and the cynical, profit-driven Wessel. They are accompanied by Kaarji, a restless Martian who feels an inexplicable pull toward the forbidden north.

As they traverse the shifting ice of the Polar Cap, the group encounters strange phenomena: the ground itself seems to pulse with life, and a mysterious, glowing vehicle emerges from the frozen wastes to transport them into the depths below. They arrive in M’Tonak, a magnificent, ancient city bathed in a perpetual green light. There, they meet a group of survivors from a lost scientific expedition, led by the determined Ross Spurlin. Spurlin has been attempting to build a spaceship to escape the city, using a unique, ultra-light metal they’ve discovered.

Landor discovers that M’Tonak is the prison of the "Dim-Ing," or Dimensional-Thing—a writhing, intelligent mass of pure energy from another universe. The entity is guarded by an incredibly old Martian named Bhruulo, who has kept the creature in check for centuries by feeding it the minds of unsuspecting travelers. When Landor confronts the entity, he feels the weight of its terrifying, alien intelligence. He realizes that Bhruulo is a tragic figure, having inadvertently doomed his own race by providing this creature with sustenance.

As the ice cap begins to break up, the situation turns dire. Landor manages to kill Bhruulo, but the Dim-Ing remains, threatening to consume the minds of everyone in the city. The Earthmen, coordinated by Landor, use their collective mental focus and a bit of clever deception—exploiting the entity's own ego and a lethal dose of native Martian stimulants—to cripple the creature. With the entity incapacitated, they struggle to power Spurlin’s half-finished ship. Using a small, salvaged piece of the miraculous metal, they manage to overcome their predicament. The survivors look toward a future where they can return to mine the metal, though the city of M’Tonak itself remains a silent, mysterious tomb.

How It Unfolds

The voyage begins Jim Landor maneuvers his small craft toward the treacherous Martian polar cap, driven by a secret, consuming need to find his missing brother. His journey takes him to the outpost of Riida, where he joins a skeptical mining party to trek into the unknown northern wastes.

The descent into the city The group is intercepted by an eerie, automated vehicle that whisks them far beneath the planet’s surface into a massive, cavernous world. They emerge into the geometric, silent streets of M’Tonak, greeted by an atmosphere that tingles with strange, alien radiation.

The discovery of the entity Landor learns of the "Dim-Ing," an intelligent, multi-dimensional mass of green fire that feeds on human thought. He realizes that the entity is not merely a ghost story, but a predatory intelligence that has trapped earlier explorers in a cycle of mental consumption.

The confrontation with the gatekeeper Landor kills the ancient Martian Bhruulo, the man responsible for managing the entity’s feeding habits, in a desperate struggle. He then realizes that he and his companions must either unite their minds to defeat the creature or be consumed by it.

The final escape Using the entity's own arrogance against it—and a well-timed dose of toxic Martian flora—Landor and the survivors manage to disable the threat. They secure a vital piece of exotic metal, allowing them to finally power a ship and plan their departure from the dying city.

The People

Jim Landor is the story’s driven, intuitive lead. His search for his brother evolves into a fight for humanity’s survival, and he possesses a rare ability to perceive and resist the entity’s psychological grip.

Conley is the grounding, honorable heart of the group. His warmth and steady leadership provide the necessary moral counterbalance to the more mercenary figures in the party.

Wessel represents the cold, corporate interests of the Tri-Planetary Mining Corporation. He is motivated entirely by the potential for profit, a trait that makes him both a useful scavenger and a potential liability.

Kaarji is a restless, atypical Martian who finds himself drawn to the entity's source. His internal struggle mirrors the decline of the Martian race, and his final sacrifice serves as a turning point for the explorers.

Bhruulo is the ancient, enigmatic gatekeeper of M’Tonak. Though he acts as a villain, he is revealed to be a tragic figure who attempted to contain a monster, only to become a servant to its insatiable hunger.

Ross Spurlin is the hardened, resourceful leader of the previously stranded expedition. His three-year struggle to construct a spaceship in the bowels of Mars demonstrates the sheer tenacity of human will.

In Its Own Voice

"The legendary city of M'Tonak lay hidden beneath Mar's Polar cap, its heart a pulsing flame from outer space."

Landor reflects on the mythic status of the city before he actually arrives there.

"The thing he saw was a roughly globular, quasi-amorphous shape that was in a state of constant fluxion."

Landor describes the terrifying, shifting appearance of the Dim-Ing when it first reveals its form to him.

What It's Really About

The story explores the tension between human ambition and the perils of the unknown. The entity is a manifestation of pure, unbridled power that feeds on the "mental sustenance" of others, raising questions about the cost of progress and the ethical implications of seeking out forbidden knowledge. There is a strong argument that humanity’s survival is not found in individual greed—like that of the mining corporation—but in the "perfect mental accord" of individuals working toward a collective goal. Ultimately, it is a story about the intersection of human resourcefulness and the indifference of the universe, suggesting that even the most ancient, alien threats can be thwarted by a combination of courage and a willingness to understand an enemy's weaknesses.

Why Read It Today

Readers who enjoy the brisk, imaginative atmosphere of "Golden Age" science fiction will find this a rewarding, concise read. It feels like a vivid, high-stakes dream, characterized by descriptions of glowing cities and terrifying, shapeless horrors that linger in the mind. The narrative moves at a relentless pace, never getting bogged down in lengthy exposition, which makes it an excellent choice for a quick afternoon session.

However, readers should be aware that the book reflects the period attitudes of its 1942 publication. The Martians are often described through a lens of colonial-era tropes, and the dialogue leans into the "hard-boiled" style typical of the era’s pulp magazines. The science is purely imaginative—more concerned with wonder and terror than accuracy—and the characters are archetypes rather than deeply psychological portraits. If you can appreciate the historical context of its writing, you will find a story that remains surprisingly potent in its depiction of a lonely, desperate struggle against an incomprehensible alien force. It stays with you, not because of its technical depth, but because of the haunting image of a city beneath the ice and the primal fear of a monster that can reach into the very center of your thoughts.