​The morning after the well at Junction 40 began to fill, the air felt crisp, holding none of the heavy, chemical heat that used to linger around the old railway lines. Elena stood on the concrete platform, watching the young woman from the station, whose name was Clara, carefully pour the fresh well-water into a row of shallow wooden troughs they had built from old railway ties.​"It doesn’t turn grey," Clara said, staring at her own reflection in the clear pool. She dipped her fingers in, letting the drops fall back with a soft patter. "For ten years, every drop we dragged out of the deep pipes turned to sludge if it sat in the sun for more than twenty minutes. This just... stays clear."​"That’s because the iron pumps aren't forcing it through rusted filters anymore, Clara," Elena explained, sitting on the edge of the platform with her legs dangling over the side. Her indigo skin looked smooth and calm in the morning light. "The earth is pushing it up naturally now. It’s filtering

​The inside of the cliff caves was as cold as a cellar, smelling of old chalk and the bitter smoke from the dry scrub-wood fires. Marcus led the way down a narrow, hand-carved tunnel that twisted deep into the white rock. The walls were covered in the deep scars of chisels and wedges, showing how many years these people had been chipping away at the mountain just to have a place to sleep out of the sun.​"We dug this main shaft thirty years ago," Marcus said, his voice echoing off the smooth stone ceiling. "Back when the Syndicate’s trains were still rolling down the track every morning. We used to send ten tons of limestone down the hill every week just to get three barrels of muddy water in return. When the trains stopped, we had to start digging down instead of out, looking for the deep drips."​He stopped at the end of the tunnel, pointing his iron crowbar toward a massive iron pipe that came straight through the rock wall. It was three feet wide, held together by giant, rusted bo

​The night on the plateau was colder than any they had spent in the valley. Without the thick carpet of indigo moss to hold the heat, the white limestone shelf of the cliffs turned into a slab of ice under the stars. Marcus and Martha didn't sleep in the open; they brought Julian, Elena, and Thomas down into the first level of the caves, where a small fire of dry juniper roots was crackling in a stone hearth.​"The water changed the air down here already," Martha said, stirring a small clay pot of broth made from the purple tubers Elena had given her. "It used to be so dry your throat would bleed if you coughed at night. Now, it feels... like the river country used to feel when I was a little girl."​"It’s because the rock is drinking," Thomas said, his old eyes reflecting the orange flames as he sharpened the tip of his root staff with a small flint knife. "The limestone up here is like a big bone. It’s been dry so long it was getting brittle. You give it a real drink from the deep s

​The twenty men didn't need to be told twice. With the cold taste of the mountain spring still fresh on their tongues, they threw their weight back against the flat iron rail-car. Julian lined up right beside Silas from the yard, digging his heavy boots into the oily gravel and leaning his shoulder into the cold metal.​"One, two, heave!" Silas shouted, his scarred chest glistening with sweat.​With a loud, rusty shriek, the massive car groaned forward, its iron wheels scraping over the tracks until it rolled past the switching point, clearing the main path to the engine sheds. Julian stood back, wiping his brow with his sleeve, his eyes tracking the deep groove they had opened up.​"Look here," Elena said, kneeling by the side of the cleared tracks.​Where the heavy car had sat for a decade, the ground wasn't just grey gravel. The indigo moss that had traveled through the water pipes from the white cliffs had already found its way down here. It was creeping out of the joints of the i

​The green sprouts in the engine shed grew with a fierce, quiet hunger, their roots breaking down the last of the iron bolts beneath the dirt. Within two days, the dark loam was covered in thick, vibrant leaves that pulsed with a faint indigo light when the desert moon rose over the hills. Silas from the yard and his men didn't need any more instruction; they had already started clearing the second shed, their heavy crowbars clanging rhythmically in the crisp morning air.​Julian stood by the open cargo cutter, checking the leather straps of his harness one last time. "The lines are clear all the way to the northern boundary, Vaan. If the old refinery at the end of the track is still sitting there, that’s the last place we need to visit before the whole line is connected."​"The sensors are perfectly quiet up there, Julian," Elena said, stepping onto the ship's ramp with her canvas seed-sack over her shoulder. Her indigo skin was bright, reflecting the clean sunlight that now filtered