Feeding the Beast

The steel service conduit behind Kultavuori’s primary housing was ninety centimeters wide, choked with braided hydraulic return lines, and slick with greasy condensation that smelled of raw sulfur and machine oil.

Jalmo squeezed his shoulders between two lagging-wrapped steam pipes, his heavy boots finding purchase on the raised angle-iron ribs of the deck. Above him, the pneumatic seals of the vault bulkhead groaned as they separated. Three heavy impacts rattled the overhead steel grating, followed by the dull, metallic ring of magnetic work-soles locking onto the gantry plates. Then came the rising, electric whine of high-output induction coils charging to cutting temperature.

They were not carrying standard containment nets or veterinary restraint collars. They had brought industrial cutting lances.

Jalmo pressed his back flat against the cold steel of the rib-plate, cradling the three-liter titanium sap canister against his stomach with his left arm while his right hand held the pry-bar. His rebreather hissed softly against his jaw with every intake, the charcoal cartridge straining to filter out the hot, copper-tinged reek of the crawlspace. Every breath tasted of scorched flux, stale ozone, and the faint, bitter prickle of unscrubbed planetary air that had already begun to seep through the upper intake vents.

Through the perforated riser six paces ahead, two searchlight beams pierced the gloom, sweeping the massive basalt-ceramic blast shutters he had dropped less than three minutes ago.

"Intake shutters are seated," a voice clipped through an external comm-speaker, gravelly and distorted by a heavy-duty scrub helmet. "Override linkage jammed at the counterweight cradle. Someone levered the dog-pins out of the guide tracks."

"Doesn't matter," a second voice replied. It was flatter, carrying the rhythmic indifference of an administrative contractor. "We aren't here to cycle the intake. The line upstream is dead. Set the thermal collars along the primary carotid arch. We bleed the catalytic sac first, then sever the pleural anchors. Commissariat wants four hundred liters of raw biomass in the transport vats before the sector pressure falls below point-eight."

"What about the keepers?"

"One down at the catwalk base. Lungs cooked by the backwash. If the junior is inside, he's already violating Emergency Protocol 09. Clear the perimeter and burn through the dorsal plates."

Jalmo kept his breathing shallow, counting the pulse in his jaw. The cold certainty settled in his stomach like iron ballast. Oula had known. The old man’s desperate shove, the canister thrust into his hands, the encrypted transponder key burning against his collarbone—none of it had been blind panic. Oula had understood exactly what Emergency Protocol 09 meant the second the siren began its five-tone rotation across the vault.

Rauta-Siltalt had never intended to repair the Vesireitti line. They were liquidating the asset.

To reach Kultavuori’s ventral maintenance bay and Oula’s sub-station locker, Jalmo had to cross the thirty-meter service trench running beneath the upper gantry. The salvage crew was directly above that trench, rigging their induction lances to the secondary deck plates. If they dropped through the central access hatch, they would box him against the blind concrete wall of the drainage sump with nowhere left to run.

Jalmo reached into his canvas tool-roll with his free fingers and pulled out his brass tension-key.

Three feet to his left ran the tertiary condensation loop, an uninsulated steel run carrying saturated vapor from the beast's thermal balancing jacket back to the heat exchangers. The line pressure gauge tapped into the elbow read one point two megapascals—roughly one hundred and seventy-five pounds per square inch—at one hundred and sixty degrees Celsius.

According to Rauta-Siltalt maintenance regulation 44-B, overriding a condensation bypass valve required three separate digital authorization tokens from an off-shift district supervisor. Jalmo had never met a supervisor who could tell saturated steam from hot spit, let alone navigate a service trench in zero visibility.

He wedged the tapered end of the tension-key into the manual relief rocker, hooking the leverage notch behind the valve’s spring-loaded bronze spindle.

The calculation was unforgiving. If he tripped the main rupture disc, the sudden pressure drop across the loop would trigger the vault’s automated halon flooding system within four seconds. Halon would smother any open flare, but it would also seep past Kultavuori’s gill-mantles and asphyxiate the beast’s dormant lung tissue. He could not dump the main line. He had to choke the secondary bleed orifice just enough for the localized thermal expansion to split the copper telltale seal without dropping line pressure below nine hundred kilopascals.

Jalmo braced his heel against a structural rib, leaned his entire body weight onto the tension-key, and levered the rocker forty degrees counter-clockwise.

The spring groaned in its housing. The valve spindle lifted three millimeters off its bronze seat.

A razor-thin jet of superheated wet steam screamed out of the telltale port, striking the damp concrete floor and expanding instantly into an opaque, boiling white wall. The hiss was deafening, a high-frequency roar that tore through the narrow confines of the service conduit like tearing sheet metal.

"Vapor breach!" the squad leader shouted from the catwalk above. Heavy boots clattered on the metal rungs as the beam from their searchlights scattered uselessly into the churning fog. "Condenser line blew! Back off the grating, optical sensors are whiting out!"

The thermal bloom blinded their infrared visors with solid white glare. Jalmo dropped low, keeping his rebreather intake tucked against his chest, and moved beneath the boiling cloud. The air along the deck plates was scorchingly hot, sixty degrees and rising, soaking his heavy duck canvas overalls in scalding wet mist. But the steam stayed high, trapped against the vault ceiling by the exhaust convection drafts. He knew every bolt head and weld seam by touch; he had replaced the floor anchors two winters ago when the drainage line froze.

He scrambled thirty paces through the blinding wash, reached the lower service hatch, and dogged the latch behind him with a single, practiced pull of his pry-bar.

The immediate roar of the steam faded into a muffled thrum behind the reinforced insulation door. Jalmo was inside the sub-manifold alcove, a low-ceilinged pocket built directly beneath Kultavuori’s massive dorsal support cradle.

The smell here was different. It was the scent he had lived with for seven years: damp loam, dark fungal enzymes, and the sweet, heavy musk of warm bio-tissue. Above him, separated by thirty centimeters of reinforced basalt tile and chitinous cartilage, Kultavuori’s vast flank rose like an underground hill. The beast was trembling, its rhythmic respiratory pulse slowed to a ragged, shuddering gasp every twelve seconds.

Without the continuous flow of Vesireitti slurry through its intake gills, Kultavuori was suffocating on its own internal pleural air reserves. Every dragging intake pulled toxic ambient seepage deeper into its delicate alveolar mantles.

Jalmo wiped the condensation from his goggles with the back of his glove and stepped up to the steel tool-locker recessed into the vibration-damped bulkhead. Stenciled across the door in faded white enamel was Oula’s identifier: `KEEPER 01 - VDS-4`.

Jalmo pulled the titanium transponder key from his neck chain and pressed the magnetic interface into the locker’s recessed reader.

The solenoid clicked. The heavy steel door swung open on oiled hinges.