The Shattered Tanker

Crude oil never whistled before a rupture, but the relief line on Siding Nine was screaming at four hundred pounds per square inch.

Stathios spat a mouthful of sulfur grit into the ballast gravel and adjusted the brass valve-key against his hip. Across the switching grid, the amber warning lanterns of the Halikarnas yard flickered through low-hanging chemical haze. Third shift had barely begun, and already the pneumatic pressure in the south manifold had dropped twenty points. If the line lost compression before the midnight freight consist cleared the junction, forty tons of heavy sour crude would jump the frogs and plow straight through the pressurized diesel pump house.

He kicked the iron lever housing. The piston did not budge. A thin line of black grease seeped around the collar, frothing where caustic vapor ate through the seal.

"Vane!" Stathios shouted toward the shunter shanty forty paces down the line. "Drop the secondary bypass on Track Six! The solenoid's frozen in the guide!"

No answer came from the shack, only the rattling cough of an old three-cylinder compressor struggling against fouled fuel. The men in the yard were either half-dead on their feet or hiding from the sulfur rain. In thirty years of managing the switching lanes, Stathios had buried six grease-monkeys who thought a hissing fitting was just atmospheric back-draft.

He hauled a four-foot steel pry-bar from the maintenance locker bolted to the signal stanchion. The metal bit cold through his canvas gloves. He wedged the bevel between the jammed rocker arm and the mechanical throw-block, setting his boots against the rail flange.

He did not rely on the faulty pneumatic gauges. Instead, he listened to the vibration hum through the steel web of the rail under his sole. The pitch was rising, sharp and dry, signaling that the incoming uncoupled tanker from the refinery spur was already rolling down the five-percent grade on dead gravity.

Stathios leaned his full weight onto the pry-bar. His lower back ground in protest, cartilage clicking beneath decades of oil-field strain. With a dull, wet clunk, the rusted hydraulic dog snapped free. The switch points slapped against the stock rail with an iron crack, locking Siding Nine into the safe runoff spur.

Before the lever could settle, a flash lit the southern horizon.

The flare did not come from the normal burn-off stacks. A silent, blinding yellow dome swelled over the skyline of the catalytic cracking plant three miles away, swallowing the flare towers in a blooming shockwave. Fourteen seconds later, the concussion hit the yard.

The ground shuddered like a dropped anvil. Ballast stone danced between the ties. The corrugated zinc roof of the shunter shanty ripped loose with a screech of tearing rivets, cartwheeling into the dark. In the distance, a deep, resonant rumble rolled through the refinery basin, thick with the smell of scorched bitumen and rotted eggs.

Stathios caught himself against the switch stanchion. The air tasted of burnt copper and acrid ash.

Down the incoming line, the headlight of the runaway tanker appeared through the roiling smoke. It was not gliding smoothly on steel axles. The four-axle, fifty-ton pressurized tanker car was bucking, bouncing violently on its leaf springs as if an immense, shifting mass inside was hammering against the interior baffles.

"Derailment!" Stathios reached for his brass whistle, putting it to his lips.

He never blew it.

A sound tore out of the tanker that had nothing to do with grinding flanges or escaping steam. It was a guttural, sucking roar, wet and cavernous, echoing off the concrete revetments of the yard.

The riveted boiler plate along the tanker's central barrel bulged outward. Thick, structural steel four inches thick distended into a jagged bubble, groaned under intolerable strain, and then ruptured with the crack of a naval gun.

Black crude did not pour out in a liquid flood. It coiled.

A mountain of viscous, glossy tar erupted from the split hull. It had no clean anatomy, only a churning, muscular mass the size of a shunting engine, studded with calcified plates of black mineral crust and dripping ropes of boiling grease. Long, segmented limbs tipped with crude-sheathed bone claws hauled the monstrosity free from the mangled iron shell.

The tanker car collapsed inward behind it, crushed flat like a tin can under a boot.

Stathios froze against the iron lever. His hand stayed clamped on the cold pry-bar, knuckles white through frayed canvas. The heat radiating off the thing was not fire; it was the suffocating, heavy reek of concentrated hydrocarbon vapor, so dense it burned the back of his throat.

The beast dropped onto all six limbs across the mainline rails, shaking itself. Paving stones cracked beneath its weight. A ruptured fuel tender ten feet away was spilling diesel from a severed drain cock, pooling around the ties in an iridescent sheen.

The creature dipped a broad, eyeless head into the fuel pool. Mandibles formed of interlocking shale and hardened pitch snapped open with a wet tearing noise. It did not lap the liquid. It drew the puddle upward in thick, surging gulps, inhaling thirty gallons of diesel fuel within seconds. As the petroleum vanished down its gullet, the creature's armored plates expanded, hissing as dark veins along its flanks ignited with an eerie, deep-amber pulse.

A maintenance worker stumbled out from behind the shunter shanty, clutching an emergency flare. The man struck the phosphorus cap and hurled the burning rod straight at the monster's flank.

The flare struck true, bursting in a shower of brilliant crimson sparks against the creature's shoulder. The wet tar around the impact site flared into a bright halo of flame, but the beast did not flinch or retreat. It turned toward the fire with a low, rumbling hiss that rattled the loose gravel around Stathios's boots. The flaming pitch seemed only to invigorate the hide, hardening the outer crust into jagged, obsidian scales.

With a sweep of a clawed forelimb, the beast crushed the shunter shanty in a single blow, sending splintered timber and twisted pipe across the tracks. The maintenance worker vanished under a wave of shifting black slag.

Stathios moved.

He did not run in a straight line down the open ballast. He kept low, darting between the rusted ribs of parked hopper cars, using the heavy cast-iron undercarriages to shield his silhouette. Every breath dragged hot sulfur deep into his lungs. Behind him, the sound of tearing metal and heavy, wet impacts marked the monster's pace as it trampled the rail switch he had spent twenty minutes aligning.

The signal tower stood thirty yards ahead, an octagonal bastion built from three-quarter-inch naval steel, elevated twelve feet on riveted iron girders. Stathios hit the steel access ladder with both hands, taking the rungs three at a time. The pry-bar was still gripped in his right fist, banging against his knee.

He reached the elevated landing just as a violent shudder racked the tower's support pilings. The creature had rammed the lower cross-bracing, seeking whatever had made the clatter on the ladder.

Stathios threw his shoulder against the tower's pressure hatch, tumbled onto the checkerplate floor, and slammed the heavy iron door shut. He spun the central locking wheel until the three-inch steel dog-bolts engaged the reinforced jamb with a solid thud.

Inside the small cab, the red emergency dials spun wildly against their pins. The phone line to the central dispatch board hummed with dead static.

Stathios leaned against the hatch, his chest heaving, listening to the wet scrape of claws against the armored plating on the outside wall. The beast gave a frustrated snort that vented a blast of caustic petroleum steam through the exterior ventilator louvers.

Stathios wiped the grime from his eyes and stepped over to the narrow reinforced observation slit that overlooked the yard.

Below, the shattered remains of Siding Nine burned in silent patches of orange grease. The Tar-Stalker had ceased battering the tower legs. Its massive, plate-sheathed head had swung northward, sniffing the wind that drifted off the industrial basin.

Two hundred yards down the main line sat the third-shift worker barracks—four wooden longhouses where forty sleeping trackmen and fitters lay oblivious to the siren failure. The monster lowered its bulk onto the tracks, its amber-lit flanks pulsing with raw chemical power, and began to crawl steadily toward the dark bunkhouses.

Stathios set the heavy pry-bar on the control console and reached for the manual yard alarm lever.