Production continued beneath an amber light.
For nine seconds, nobody moved.
Then Dana lifted her radio. “North control, Ridgeway Lower at Junction Four. Fixed indicator changed green to amber after entry. Yesterday's route order says evacuate on change. Confirm.”
Static answered first.
Ray turned the crew without waiting. “Carts stay. People go.”
Marco counted eight Ridgeway workers: Dana, Ray, Cal, Wes, Harlan, two harvest hands from the morning pool, and himself. Ray held the front with his spear. Cal guarded the rear. The number mattered more than names until everyone reached the other side of the checkpoint.
“Eight moving,” he said.
The indicator flickered green.
Wes stopped. “It cleared.”
“We didn't,” Dana said. “Walk.”
North control came through the radio. “Ridgeway Lower, amber event is localized fluctuation. Hold at North Three pending sensor verification. Do not cross Seven.”
“We are withdrawing to Three,” Dana said.
The route between Junction Four and North Three ran along a buried conveyor line. Empty ore carts stood on a siding beside the wall. A painted green arrow marked the nearest shelter approach. Marco had walked the corridor fourteen times and never before noticed how much of its ceiling depended on steel mesh and bolts.
He chalked a line beside the junction as he passed.
The first impact came from somewhere below.
It traveled through the floor rather than the air. Cart wheels jumped against their rails. Dust fell in narrow streams from the ceiling. The amber indicator turned red for half a second, went dark, and returned amber.
“Move,” Ray said.
A metallic crack sounded behind them.
Marco looked back in time to see the North Seven barrier field collapse into blue sparks. Not the gate. The field behind it—the part intended to slow anything that got through steel.
The corridor lights dimmed.
Something small flew out of the dark and struck the wall.
A mana beetle landed on its back, legs churning. Three more followed. Then rats poured around the junction, not hunting, not spreading to feed. Running.
“Against the right wall,” Dana ordered. “Let them pass.”
The crew pressed beneath the conveyor shielding. Most of the rats streamed down the center. One struck Cal's boot and veered away. Another climbed over a fallen beetle without slowing.
The fifth rat turned toward the people.
Ray pinned it with the spear before it crossed half the distance.
“Prey migration,” he said. “Something pushed them.”
North control was asking for status. Dana answered while walking.
“Barrier field failure at Seven. Active migration toward Three. Eight Ridgeway withdrawing. Initiate zone evacuation.”
The response changed immediately. A two-tone alarm replaced the amber chime.
ZONE ONE NORTH — CONTROLLED EVACUATION. REPORT TO NEAREST MARKED EGRESS.
The word controlled did not make the animals controlled. It told frightened people where to move.
At North Three, another crew entered from the mineral wash: six people pushing a loaded sample cart. Their route lead wore an F-rank stripe beside an active-license marker and had blood on one sleeve.
“Crawler in Wash Two,” she said. “It came through the drain cut.”
“Anybody missing?” Dana asked.
“One maintenance pair at the lower switch. Radio says they're moving.”
Dana pointed toward the shelter approach. “Merge counts. Keep the sample cart if it rolls. Leave it if it doesn't.”
Fourteen workers moved together.
The loaded cart made it twenty yards before its front caster locked on fallen stone. Two people reached automatically for the handles.
“Leave it,” Marco said.
The licensed F-rank lead looked at the sealed sample drums, then at the people waiting behind them. She pulled the release tag and abandoned forty thousand dollars of contracted mineral in the lane.
The decision took three seconds.
Money only became obviously secondary after danger had made the comparison rude.
The next impact broke the overhead mesh.
A section dropped across the route between Marco and the front half of the group. He raised his left arm. Steel scraped his helmet and drove him to one knee. Something sharp opened the back of his calf.
The mesh did not trap him. Wes was less fortunate.
An upright support struck Wes across the shoulder and side of the head. He fell beneath a loose curtain of wire.
“Rear stopped,” Marco shouted.
Ray and Dana were on the far side of the fallen section. Cal turned back with Harlan.
“Keep the front moving,” Ray said. “Marco has rear count.”
Marco took the rear count.
Marco cut the loose tie with his utility knife while Cal held the mesh off Wes's face. Harlan checked breathing and pupils.
“Concussed,” Harlan said. “Maybe collarbone. He can't walk.”
The two harvest hands had stopped behind them. Six people remained in the rear group.
“Secondary route?” Cal asked.
Marco pointed to a yellow maintenance stripe branching around the conveyor. “Reconnects before the shelter. Narrow, two blind turns.”
“Threat status?”
Nobody knew.
The main route was blocked by mesh they could cut in minutes they might not have. The side route was open now.
Marco checked the wall map before committing.
The emergency placard showed the branch rejoining the shelter approach through Door N-3B. A maintenance correction had been taped across the lower corner: BYPASS PARTIALLY OBSTRUCTED — CART WIDTH RESTRICTED. People could pass. A rigid litter might not.
Wes could not safely walk and might need a litter before the end.
“Can we clear the main mesh?” Harlan asked.
Marco looked at the twisted anchors. “Four cutters, maybe five minutes. More if the upper section shifts.”
The floor pulsed again.
“Side route,” he said. “We keep him supported until the shelter.”
He called the choice to Dana before radio static thickened.
“Rear six taking N-3B bypass. Wes nonambulatory, breathing stable. Main route blocked by fallen mesh.”
Dana repeated the message so he knew she had it. “Rear six confirmed. Patrol notified. Mark every turn.”
Marco wrote 6 / WES CARRY / SHELTER at shoulder height beneath the first yellow stripe. If their radios failed and someone came looking, the wall would know more than the network.
He checked the fixed sensor at the branch. Green mana. No large-motion detector in the maintenance cut. Green meant less there than it meant in the main corridor.
The course had treated missing information as risk. Underground, missing information looked like a blank panel and a dark turn.
Marco marked the turn in chalk and wrote 6 beside it.
“Harlan front. Cal with me on Wes. You two keep rear light and call anything that moves.”
He knelt with his back to Wes.
Pain pulled across Marco's right shoulder when they lifted. Laborer settled Wes's weight closer to his spine, but the class could not move a possibly broken collarbone safely by itself. Cal supported the injured side. They used a folded jacket between Wes's arm and chest and moved slowly enough not to drop him.
The side route smelled of rust and hot fungus.
At the first turn, Marco saw his own chalk from a maintenance collection months earlier: a small arrow pointing toward the shelter. It had survived wash cycles because he had placed it beneath an overhang.
Preparation did not always look like a trap waiting for the correct monster.
Sometimes it was knowing which way an old mark pointed while carrying a man who could not answer questions.
The branch narrowed at N-3B exactly as the correction warned. An abandoned cable spool reduced the opening to twenty-eight inches. Marco and Cal could not carry Wes through side by side.
They lowered him onto the folded collection tarp. Harlan stabilized his neck with rolled jackets. Marco fed the tarp through the gap, crossed first, and pulled while Cal supported Wes from behind.
The right shoulder took more of the load than Marco intended. Pain spread from the joint into his upper arm.
“Stop,” Harlan said.
“We're halfway.”
“And your arm is shaking.”
They stopped while the corridor alarm continued counting time they did not control. Cal changed position. One harvest hand took the tarp line on Marco's right. They completed the pull with less strain and no additional movement in Wes's neck.
Marco had been about to solve the bottleneck alone because stopping felt expensive.
Harlan's correction cost twelve seconds.
It preserved the arm Marco still needed.
Scratching came from behind.
The rear harvest hand said, “Two rats.”
“Let them pass if they pass.”
They did not.
One stopped at the blood trailing from Marco's calf. Its head lifted. The other circled toward the wall, looking for an angle around the group.
Marco could not draw while carrying Wes.
“Set,” he said.
They lowered Wes behind a pipe curb. Harlan braced his head. Marco unslung Ridgeway's work bow.
The first rat charged from twelve yards.
Marco's arrow entered below the jaw and disappeared into the chest. The rat rolled against the pipe. The shaft snapped under its weight.
Twelve company arrows remained.
The second rat fled around the turn.
Marco did not chase it. He did not try to recover the arrow. They lifted Wes again.
At the next junction, the maintenance route opened beside a row of empty carts. A ridge crawler stood between them and the shelter approach.
It was not hunting either. Its flank bore three parallel wounds, and one rear leg dragged. It paced beneath the alarm light, caught between the smell of blood behind Marco and the evacuation strobes ahead.
Harlan whispered, “Can we wait?”
A heavy impact answered from the route they had left.
The crawler lowered its body.
Marco looked at the carts.
Their wheel locks faced the shelter. The track sloped gently toward the animal. He had no time to build the kind of trap he trusted. He had enough time to change a line of travel.
“Put Wes behind the curb. Cal, release the first cart when I say. Everyone else behind steel.”
“You shooting?” Cal asked.
“If it turns.”
Marco moved to the far side of the track and struck the cart frame with his spear.
The crawler's blunt head swung toward the noise.
He struck again, then stepped behind the second cart.
The animal charged.
“Now.”
Cal released the brake.
The empty cart rolled downhill. It did not hit the crawler squarely. The animal saw movement and twisted. The cart clipped its injured hip, shoved it against the wall, and bounced off the rail.
Marco drew.
The angle offered ribs behind the foreleg. His shoulder trembled under the load. He released before the sight settled completely.
The arrow struck high in the muscle.
The crawler screamed and came toward him anyway.
Marco retreated around the locked second cart. The steel frame stayed between them. The crawler bit the corner and tore rubber from the bumper.
Cal drove the short work spear through the open side above its foreleg. Not deep enough. Enough to make it recoil.
Marco drew the spear back with him.
The wounded animal found another choice. It squeezed between the rolling cart and the wall, then vanished into the main route after the fleeing rats.
Marco's arrow went with it.
Eleven remained.
They lifted Wes.
At the shelter approach, Dana had kept the gate open and the count visible on the wall: 8 + 6 = 14. When Marco's rear light appeared, she changed the six to five, then looked at Wes between Marco and Cal.
“Fourteen people,” Marco said. “Thirteen walking.”
The gate closed behind them.
Dana did not let relief finish the count.
She matched every badge scan against the merged roster. Two mineral-wash workers had reached a different shelter. The maintenance pair reported at South Three. Fourteen people stood or lay inside this one. Nobody remained unaccounted for.
Only after control repeated ZONE NORTH PERSONNEL ACCOUNTED did Dana release Marco from rear duty.
“Medical line,” she said.
“Ray is still outside it.”
“Ray has a route-lead assignment and a licensed patrol team. You have a bleeding leg, a strained shoulder, and no combat endorsement.”
Marco looked through the shelter window at the barricade.
“Those are facts,” Dana said. “Use them.”
He crossed to medical.
Medical staff took Wes onto a rigid litter. Someone cut Marco's pant leg around the calf wound. The laceration was long but shallow, packed with gray dust. His right shoulder had begun to stiffen where the mesh and Wes's weight had pulled it.
The shelter medic logged each condition separately. Laceration: stable. Shoulder: movement restricted pending imaging. Exposure: dust decontamination required. Mental status: alert, oriented, attempting to leave the treatment line.
“That last one isn't a diagnosis,” Marco said.
“It's a behavior I need the next medic to know about.” She fastened a yellow band around his wrist. “Emergency usefulness does not make you the person with the worst untreated injury. You can report from here.”
She handed him a slate. Marco wrote the last confirmed positions of Ray, the patrol pair, and the maintenance workers instead of walking back to confirm them himself. Information could travel without his body attached.
Ray stood at the inner choke with two route leads and the licensed E-rank patrol team from yesterday. They had turned ore carts sideways across the corridor and chained the frames through floor anchors.
“You staying?” Marco asked.
“Shelter gate won't hold if the main choke fails,” Ray said.
“Neither will you.”
“That's why Shaw called response.” Ray looked at the blood on Marco's leg. “You delivered your count. Get treated.”
A notice opened across Marco's vision.
His shoulder still hurt. His System Rank remained G. The System had recorded the level, the evacuation, and the work that earned it, but it did not print partial ranks. His public license remained active and no broader.
Marco left the Attribute Point unassigned. Bleeding beside a shelter roster was no time to choose a permanent change, and the update gave him no authority at the choke.
He closed the display, set the slate beside the medic, and recorded the time of the last impact for the responders still coming.
Then something hit the far gate.
The chained carts jumped six inches.
Steel bowed inward around a shape wider than the corridor.