They sent the crawler ahead without the cradle. At the bent station-side support, Mara used its arm to lift the bundle over the guard before sending it on.
Its service carriage traveled along the maintenance rail, three hundred meters across a slope whose extent Mara could not see. A camera at its nose looked forward; another watched the line bundle paying out from the station. The protected loops unfolded in slow succession. Nessa counted each as it left the rack, marked it on her diagram and stopped once to free an outer loop that had settled over an inner one.
No one was aboard. Mara still found herself tightening her shoulders as the lights of the original station diminished behind it.
Benji came down with a stool. He set it beside the console, looked at Mara for permission and sat when she moved her elbow. Leonie stood at the exchanger. Jonah had the manual balance handle resting beside his hand, not in hers. Kit remained in the Living Drum, watching the same feed on a smaller screen. He did not want to sit beside Nessa. The spare chair waited empty.
The rail ran over two low supports, then descended across a patch of broken rock. Outside the light, tiny points flashed and vanished. Some were reflections. Some moved against the water. Mara followed one until it opened into a branching cluster and disappeared below the camera.
"Animal?" she asked Benji.
"Maybe. We haven't had enough light out there."
He did not sound frustrated by not knowing. His whole face had sharpened with attention.
The crawler reached the first living field.
Mara had seen the bed beside the bore. This was different. Fine ridges lay across the silt, not randomly but in long bands that converged toward dark cracks in the rock. Transparent tubes rose between them. At the upper edges of the tubes, something opened into flat fans. Water carrying a faint smoky plume rose through the fans and mixed with clearer water above.
One fan closed as the crawler light crossed it. A second followed. Then a whole band folded down, a movement traveling across the seabed faster than the carriage.
"Turn the light away," Benji said.
Mara turned it toward the empty rail. Through the edge of the beam she watched the band open again.
"Did you get that?"
"Recorded," Nessa said.
"Not just the camera. Did you see?"
Nessa looked at him. Something in his face made her stop whatever she had been about to say.
"Yes," she answered.
Benji smiled at her and turned back.
The Refuge Bell appeared as a dark curve in the water. Its pressure hull had been painted white. Silt made the lower half gray. Six months earlier someone had designed the view from its broad window, chosen the exact place where a person could stand and see the living gradient without having to crouch. Mara had thought of observation as a professional word. Now the window looked like an invitation left for people who had not known they would need it.
She brought the crawler close to the exterior service collar. The protective plate's bolts released cleanly. The gripper took the plate, lowered it onto the designated rack and exposed the mating face. Mara used the camera to inspect its full circle. No deformation, no growth across the seal surface, no hidden crack in the housing.
"Sal gets this," she said.
Hester captured the image and sent it. The surface reply took a few seconds: received, clear enough, checking handling limit.
Nessa opened the Bell's internal lights. The window shone out. The crawler's image reflected in it, a small mechanical shape at the edge of a room none of them occupied.
Mara asked for the internal camera. Benji shifted on his stool.
The bunks emerged first, six narrow frames folded against two walls. The floor had tie points and a broad central clear space. Beyond it the galley counter held the kettle in its webbing loop, a sink, a fold-down table. Sanitation behind a sliding door. Storage above and below. A room intended for shifts and observation, capable of becoming a life only if people filled it with all the things a drawing omitted.
"That bunk squeaks," Benji said, pointing.
"They all squeak," Nessa answered.
"That one does it in the middle of the night when nobody moves."
"Pressure equalization in the frame."
"Or it's a ghost."
Nessa did not smile. Benji let the joke drop. He looked at the broad window again, waiting for something only he could see from this angle.
The collar passed its dry test. Inside, the stock and battery readings matched their earlier survey; Sal added the oldest food packets to his replacement list. The breathing panel remained uncharged, its portable-bottle clips empty as Leonie had said. Mara took the crawler around to the power receptacle and opened its steel cover. Clean contacts shone above the settled silt.
"Package can mate there," Hester said, sending the image up to Sal.
Mara parked the crawler beside the receiving collar.
"Leaving it there?" Nessa asked.
"Five of you arriving with your hands full. If that mate needs cleaning, I want a tool where you are."
"We won't have one here."
Mara checked the station-side rig, then the empty refuge door. "I know. Leave it at the receiving end."
Leonie had been silent throughout. Now she asked to see the spare exchanger.
Nessa opened its internal camera. A clean lattice stood inside the pressure boundary housing, ready for the living interface. The empty patient manifold faced the bunks. Six connections. One spare at the service collar. Mara looked away from the spare connection.
"We can prime a small test loop," Leonie said. "Not patients. We need to see charge across the destination membrane while the source is still on the rail."
"How small?" Mara asked.
The physician showed her the small live interface attached through the service bundle. They could test the destination exchanger while keeping it connected to the whole source.
Nessa laid out the empty loop herself. She put its unused patient fittings on the shelf behind her before taking the control.
They fitted the test loop. Benji rose to help Leonie, moving quickly once the task involved a circuit he knew. Jonah held the return steady. Mara checked the exterior routing, brought the crawler's service coupling against the refuge port and let Hester run the protected mating test. The coupling held, the same protected mate Nessa had shown her for pod recovery.
The Bell's exchanger warmed. Benji showed Nessa how the line should lie on its guide, then leaned close to listen as she opened it. The test carrier moved through the empty loop. On Leonie's screen the charge trace rose.
Mara looked through the crawler camera toward the gradient.
A wide band of fans had opened beside the Bell. In their overlapping translucent surfaces she saw the light split into dull colors, green under gold under a red that almost vanished when she looked directly at it. The whole field breathed without breath, taking in one moving water and returning another. It was not waiting for humans. It had not been a home until they arrived to ask something terrible of it.
"Show the window," Benji said.
Mara changed to the internal camera.
The view was extraordinary even at a distance: the curve of the glass framing the living seabed, the rail descending toward it, the work lights making a little shore in darkness. Benji leaned so far forward that Mara caught the stool with her boot.
"I wanted to bring a chair here," he said. "Before everything. A good chair, not one of these things. I thought I could sit there with coffee."
He stopped at coffee. His mouth twisted, then relaxed.
"I could still sit."
Kit's voice came from the Living Drum speaker. "Which bunk's farthest from the pumps?"
They all turned toward the sound.
Nessa checked the layout. "Upper left. Less vibration."
"Don't give it to Benji. He snores."
"I don't anymore," Benji said.
The answer had come too quickly, too brightly. He heard it himself and looked down. Nobody rescued the joke.
Then Kit said, "Fine. I'll find another reason."
Benji smiled without looking up.
Sal returned a deployment window: the support package would follow once the tram cleared the rail. Imani entered it in the log.
The charge trace on the test loop steadied.
Leonie set down her pen. "Destination exchange is working."
Benji held up a finger. They waited while he listened to the pump. Then he lowered his hand.
They had somewhere to go.
Mara kept the camera on the window for another minute. No one asked her to hurry it.