Under the Andes

In Short

This pulp adventure chronicles the harrowing journey of Paul and Harry Lamar, who follow a mysterious woman into the depths of the Andes mountains. They stumble upon a secret, cavernous civilization of Incas who live in total darkness and worship a grotesque, powerful king. Part subterranean survival story and part psychological drama, the book tracks the brothers' desperate attempts to escape this hidden world. It remains a notable example of early-twentieth-century "lost race" fiction, distinguished by its cynical, intellectual narrator and its blend of existential dread with high-stakes action.

The Story

The narrative begins in the refined, weary world of a New York gambler. Paul Lamar, a man of wealth and detached philosophy, discovers his younger brother, Harry, has become infatuated with a glamorous, enigmatic French dancer named Desiree Le Mire. When Harry and Desiree abruptly depart for the West, Paul pursues them, eventually tracking the pair to Peru. What starts as a conventional rescue mission takes a surreal turn when the trio is captured by an advanced, reclusive society of Incas living in vast, lightless caverns deep beneath the earth.

The Incas are a brutal, primitive collective ruled by a dwarf king who covets Desiree. The brothers are thrown into a nightmarish, subterranean environment characterized by darkness, strange beasts, and a complete absence of surface-world morality. Paul, the older brother, assumes the mantle of protector and strategist, while Harry is driven by a volatile, romantic attachment to Desiree. The trio’s existence becomes a series of escapes, skirmishes with spear-wielding captors, and long, grueling treks through pitch-black tunnels.

As they suffer starvation and physical injury, their humanity is tested. The Incas are not merely obstacles; they are an alien force that seems to feed on the brothers' fears. The group eventually attempts a daring escape by diving from a massive stone column into a bottomless lake, hoping to find an outlet to the surface. Their journey is punctuated by a tense, claustrophobic internal dynamic, as Desiree’s influence over the brothers creates friction. She becomes a surprisingly pragmatic, if detached, figure, at times seemingly resigned to her life as an object of fascination for the Inca king.

The climax involves a brutal confrontation with the king and a frantic, exhausting flight through a labyrinthine tunnel system. After enduring near-impossible physical hardships and the constant threat of death, the brothers finally break through to the surface. Yet, the story takes a jarring turn in its final moments. Upon their return to reality, Harry—the man who lived the adventure—denies the entire experience, claiming he never left New Jersey. Paul, left with only his manuscript and his sanity in question, finds himself isolated by the very truth he intends to preserve.

How It Unfolds

The pursuit begins Paul tracks his brother Harry and the alluring Desiree from New York to Denver, and finally to Peru. His search is motivated by concern for his brother’s vulnerability to Desiree’s capricious nature.

Descent into darkness The trio is captured by a civilization of Incas living in an immense cavern beneath the Andes. They are forced into a survival struggle against a hostile, lightless society and their dwarf king.

The escape attempt The brothers and Desiree plan a desperate flight from the cavernous depths, leading to a perilous dive into a subterranean lake. They endure isolation and starvation while navigating the maze-like underworld.

The final confrontation The group battles through the Inca corridors as they seek a way to the surface. They manage to evade their captors, but the ordeal leaves the brothers physically shattered and mentally adrift.

The reality check Upon reaching the surface, Harry refuses to acknowledge the events that transpired. Paul is forced to reconcile his vivid, traumatic memory with his brother’s total denial of the entire journey.

The People

Paul Lamar is the narrator, a man who prides himself on his cynical detachment and philosophical rigor. He views the world through a lens of intellectual observation, which serves him well when facing death but creates an emotional wall between him and his brother. He is the pragmatic anchor of the group.

Harry Lamar is Paul’s younger, more impulsive brother. His obsession with Desiree drives the plot’s momentum, though he is often reckless and prone to emotional outbursts. Throughout the subterranean ordeal, he moves from a romantic dreamer to a hardened, if unstable, survivor.

Desiree Le Mire is the catalyst for the entire journey. A famous French dancer, she is described as a "bundle of animated caprice." While initially appearing to be a damsel in distress, she reveals a surprising, stoic resilience and a capacity to manipulate those around her, including her captors. Her presence exerts a pull that often dictates the behavior of both brothers and the Inca king.

In Its Own Voice

"The room, which was unusually large, held two or three leather divans, an English buffet, and many easy chairs."

Paul describes the stifling, gaudy atmosphere of the New York gambling den where the story begins.

"I saw that the dark line was not a part of the wall at all; and then--well, then I laughed aloud in spite of myself."

Paul recounts the moment he realizes that a row of silent, watching Incas is actually a line of squatting, hostile captors.

"I have never understood the delay of the Incas at this juncture; possibly they took time to consult the great Pachacamac and found his advice difficult to understand."

Reflecting on their captivity, Paul attempts to rationalize the alien, unpredictable behavior of their tormentors.

What It's Really About

At its core, the book examines the thin, fragile veneer of modern civilization when stripped away by extreme environmental pressure. Paul’s philosophical framing suggests that human "cynicism" is merely a form of defense against an indifferent universe. The narrative questions the nature of reality: if a life-altering experience is shared by two, but remembered by only one, does the truth become a matter of objective fact or personal sanity? It forces the reader to consider whether the "adventure" was a literal journey or a shared psychological breakdown, emphasizing the theme of isolation—both in the depths of the earth and in the inability to truly communicate one’s experiences to others.

Why Read It Today

Readers who enjoy early-twentieth-century adventure fiction with a darker, more cerebral edge will find much to admire here. The prose is remarkably lean and direct, eschewing the flowery excesses often found in pulp writing of the era. It feels like a precursor to the "lost world" genre but carries a distinct, unsettling psychological weight. The middle sections are genuinely intense, capturing the claustrophobia of a subterranean world with unsettling precision.

However, modern readers should be prepared for the period-specific attitudes embedded in the text. The depiction of the Incas as a monolithic, monstrous "other" reflects the colonial-era tropes of its time, which can feel jarring today. Furthermore, the abrupt, gaslighting conclusion may frustrate those looking for a neat resolution to the survival plot. What lingers is not the triumphant victory of the heroes, but the uncomfortable, lingering doubt cast by the final chapter. It is a book for those who prefer stories that refuse to resolve cleanly, and who appreciate a narrator who is just as interested in his own fraying mental state as he is in the monsters lurking in the dark.