Apex Biomass [Biological Engineering LitRPG] - Book 1 — complete
Chapter 39 The Collapse
It didn't snap. The weakened shale socket simply gave way with a loud, wet CRACK. A chunk of grey rock the size of a barrel pulled clean out of the cliff wall, accompanied by a shower of pulverized stone dust.
Without the western guy-wire to balance the load, the entire timber winch frame violently twisted forty degrees on its remaining mounts. One of the heavy wooden legs shattered like dry kindling under the sudden shear force.
"Look out!" a guard shrieked, jumping backward as a snapped tension cable whipped across the terrace, taking out two torch tripods in a spray of orange sparks.
The hanging sled didn't drop down the main drainage chute.
Because the cable angle had violently shifted sideways, the heavy iron sled swung like a massive pendulum directly into the narrow, dark fissure of the western wall.
It struck the inner granite wall of the fissure fifty feet down with a deafening, metallic thunderclap.
The impact was catastrophic.
The structural iron bands of the right-hand canister ruptured on contact. The soft lead-bismuth shear pins sheared instantly, and the main brass manifold tore completely off the top of the sled.
A huge volume of pressurized, boiling Ash-Scour defoliant erupted into the confined fissure in a massive, foaming geyser of pale yellow liquid and acrid chemical steam.
"Retreat!" Rowan barked, grabbing Kaelen's collar and hauling him bodily into the dark chimney.
The chemical explosion below was ugly, immediate, and violent.
The boiling solvent filled the narrow fissure like an overflowing cauldron. Where the yellow foam touched the thick mats of hanging shelf-moss and iron-ferns lining the fissure walls, the plant life dissolved on contact, liquefying into a steaming, black, greasy soup that poured down the rock faces.
Dense clouds of caustic white vapor billowed up out of the fissure, swallowing the light of the torches. The air became blindingly thick with the smell of burning lipids and scorched mineral.
On the ledge above, the surviving enforcers were shouting in panic, their boots slipping on the slick, chemical-coated stone as they scrambled back toward the upper access tunnel.
Rowan and Kaelen scrambled down the chimney as fast as Kaelen's leg would allow. Rowan stayed between Kaelen and the advancing cloud, taking the worst of the stray droplets as they scrambled down the chimney. The fabric across his shoulder sizzled wherever a drop landed, going stiff and dark under the chemical contact.
They dropped onto a mid-level drainage terrace thirty feet below the disaster zone, gasping for clean air.
The side fissure above them was still flooded with boiling, yellow-gray chemical foam. The runoff poured over the edge of the shelf in a thick, scalding waterfall, dissolving every patch of moss, lichen, and root-mat in its path.
"It worked..." Kaelen panted, leaning his back against a cold basalt wall and sliding down until he was sitting on the wet gravel, clutching his splinted leg. "The main chute... it didn't hit the main chute..."
"No," Rowan said, standing at the edge of the terrace and looking down into the boiling chemical runoff. "But it's eating the side drainage."
He inspected his scale-patterned forearm. A drop of Ash-Scour condensation had soaked through his sleeve, touching the calcified plates on his wrist. The skin was red, irritated, and stinging—even his modified, calcified epidermis offered only limited resistance to concentrated alchemical solvents. His current body had no natural mechanism to neutralize heavy caustics.
He looked back toward the foaming runoff stream.
Then Rowan froze.
His eyes, adjusted to the gloom and steam, caught an anomaly in the middle of the chemical spill.
Twenty feet away, directly in the primary path of the boiling yellow Ash-Scour waterfall, a single cluster of plant life was clinging to the sheer rock wall.
Every surrounding piece of vegetation—mosses, liverworts, tough mountain creepers—had been reduced to black, oily sludge. But this specific plant was entirely intact.
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It was a low, fan-shaped frond with thick, pale-green, rubbery leaves and a bulbous, dark-purple root-node wedged deep into a shale seam. As the scalding, caustic chemical solvent washed over its fronds, the plant didn't wither or liquefy. Instead, its outer surface was glistening with a thick, milky-white translucent film.
Where the yellow defoliant hit that film, the chemical didn't eat the leaf. It curdled into small gray, harmless-looking curds right on the surface, sloughing off the fronds into the abyss.
Rowan stared.
"Rowan?" Kaelen called out from the wall, his voice tight. "We need to keep moving. The guards up top are going to sound the alarm across the whole fault line..."
"Wait," Rowan whispered.
He stepped closer to the edge of the terrace, leaning out over the steaming chemical runoff.
His gaze fixed on the pale-green fronds, and he let his focus narrow onto the plant the way it always did before a scan, that familiar pull of attention settling into place.
A subtle, pale blue interface prompt flickered across the peripheral field of his vision:
***[TARGET SCAN INITIATED]***
Organism Identified: Caustic-Silt Fern (Deep-Fault Biota Variant)
***Structural Category: Alkaline-Secreting Lithophyte***
***Biological Traits Detected:***
- Specialized Lipid-Protein Dermal Matrix
- Protective Cuticle Secretion
- Chemically Resistant Surface Layer
***Analysis Progress:***
***Understanding: Insufficient for Construction***
***Blueprint Generation: Locked***
Notice: Raw structural data recorded. Complete anatomical and functional comprehension required before Executable Blueprint can be compiled .
Rowan watched the blue text dim.
He didn't receive a skill. He didn't receive a new capability or an immediate blueprint. His Form Level remained exactly where it was—Tier 1, Form Level 8/10.
But the biological principle was right there in front of him.
The fern didn't resist the chemical through sheer toughness or hard armor like his calcified scales. Something in that milky film kept the solvent from ever reaching the living tissue underneath it—whatever the fern was doing, it worked, even if he couldn't yet say exactly how.
His current chassis had no protection against solvents. If he fell into a pool of Ash-Scour, his calcified skin would eventually break down, and his mucosal filters only protected his lungs, not his skin.
This plant possessed some piece of the puzzle his body was still missing.
"Rowan!" Kaelen snapped louder, pointing up the trail. "Look at the hoist tower!"
Rowan drew his hunting knife.
Leaning out over the ledge, he anchored his heels with his friction grip and used [Tendon Leverage Surge] to lock his stance and drive his body's leverage through the blade, slicing clean through the base of the Caustic-Silt Fern's root-node. He caught the thick, rubbery plant and its intact secretory bulb in his gloved hand, wrapping it quickly in a piece of oiled canvas before tucking it deep into his belt pouch.
He didn't know how to compile it yet. He didn't have the metabolic reserves or the necessary depth of understanding to map its cellular pathways. But he had the raw material.
"Alright," Rowan said, stepping back to Kaelen and helping the injured man to his feet. "We move."
Above them, on the high ledge of Hoist-Tower 2, a massive brass alarm gong began to ring.
The deep, metallic CLANG... CLANG... CLANG echoed back and forth across the walls of the gorge, signaling a major operational failure. Horns blew from the lower Vane-Hollow outposts, answering the alarm.
The primary deployment sled had been destroyed, its defoliant diverted into a side fissure. The immediate threat of a valley-wide chemical wipeout at dawn had been intercepted.
But as Rowan and Kaelen turned to retreat down the secondary drainage path, the ground beneath their feet suddenly shuddered.
It wasn't a black-powder blast.
It was a deep, wet, tearing sound from inside the collapsed side fissure.
The boiling Ash-Scour defoliant that had flooded the side fissure had dissolved more than just the surface mosses. The chemical runoff had eaten straight through a soft shale ceiling, collapsing the roof of an unmapped subterranean cavern directly beneath the gorge floor.
A massive cloud of white steam, mixed with yellow chemical foam and shattered rock, geysered out of the newly opened hole.
Then came the roar.
It wasn't a human sound. It was a guttural, wet, furious screech that vibrated the fillings in Rowan's teeth.
From the geysering hole in the collapsed drainage chute, a massive shape erupted onto the rock terrace.
It was a Gorge-Gorgon—a fifteen-foot-long, heavily armored reptilian apex predator. Its thick, dark-green scales were glowing dull red from its internal thermal vents, but its left side was covered in smoking, yellow chemical burns where the boiling Ash-Scour had flooded its subterranean lair.
The beast was blind with agony, its dorsal gill-slits spewing hot steam as it thrashed madly across the terrace, its heavy tail smashing an abandoned timber shelter into splinters.
It wasn't hunting. It was a critically injured, chemically burned animal in a state of frantic panic, tearing apart everything in its path as it tried to escape the boiling chemical seep.
And it was charging directly toward the main Vane-Hollow staging post at the base of Hoist-Tower 2.
Rowan adjusted his grip on Kaelen's arm, his eyes locked on the thrashing predator and the collapsing ledge.
He had stopped the defoliant array. But the disrupted ecosystem had just unleashed a new disaster.
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