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Book synopsis

Caleb Rys is a forensic speleologist and cartographer who maps the unmappable. When he is hired to explore the "Gargoyle Fissure"-a massive, dry, uncharted limestone cave system deep in the desert-his mission is simple: recover the bodies of three amateur cavers who went missing weeks ago.

But the terror begins deep underground when Caleb discovers the truth. The victims weren't amateur cavers; they were heavily armed private military contractors working for a shadow corporation. Their objective wasn't exploration, but the illegal extraction of a perfectly preserved, undiscovered prehistoric hominid frozen inside a subterranean thermal-ice pocket. In their explosive haste to break the ice, the mercenaries fractured a bedrock seal, releasing a high-pressure pocket of toxic, hallucinogenic volcanic gas into the enclosed cave system.

As the invisible gas displaces the oxygen, Caleb suffers from severe hypoxia, triggering vivid, terrifying hallucinations that blur the line between reality and madness. Worse still, one mercenary has survived. Driven completely psychotic by the toxic gas and the absolute darkness, the contractor believes Caleb is the prehistoric monster released from the ice and begins hunting him through the pitch-black labyrinth.

Cornered in a horizontal, razor-sharp limestone crawlspace with only ten inches of clearance, Caleb is pinned flat on his stomach, unable to back up or turn his head. With the insane mercenary crawling rapidly behind him with a pickaxe and planting explosives to collapse the entire cave, Caleb must weaponize the absolute darkness to survive. Forced to question his own sanity and fight for every breath, he must decide whether to escape with the greatest biological discovery in history, or bury the nightmare forever.

Book details

• Full title: Tectonic Grave
• Author: Rowan Sterling
• Language: English
• Binding: Paperback
• Number of pages: 224
• EAN: 9798233526084
• ID: 51386596
• Publisher: Antillas Publishing House
• Weight: 266 g
• Dimensions: 216 × 140 × 13 mm
• Date of publishing: 26. February 2026

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