第41章 The Still Song

The bridge had been open for six weeks when the Warden changed. Elena noticed it the way she noticed any change in a machine she trusted: not as an event but as a shift in texture, a note that had been steady and was now a fraction of a tone lower. The Luminoth had always moved through the deep city like light through water, unhurried and endless, their forms shifting and settling like constellations deciding where to be. Now the eldest of them, the Warden who had touched her hand in the tunnel and spoken the whole history of the deep into her in a single current of meaning, drifted beside her with a stillness that was not rest but attention. It was listening to something it could not quite hear. "Tell me," Elena said. She had learned, in the months since the first bridge, that the Warden waited to be asked. It did not volunteer its griefs. It waited for someone to carry the question to it, the way she had carried the clicking in the walls to her grandmother when she was small, the way she had carried the first signal to the council when it had come through the tower's receiver like a heartbeat over the static. "The second choir has gone silent," the Warden said. "Thirty years ago, on a night I have been trying and failing to forget ever since, the second choir stopped singing." Elena waited. The Warden's light dimmed slightly, the way a lamp dims when it is remembering something heavy. "There were three choirs," it said. "We were the guardians of the deep city, the ones who kept the streets lit and the memory of the first people warm. The second choir was older and quieter. They were the keepers of the First City, the city beneath this one, the place where the first people first learned to live in the dark. And the third choir — the oldest of us, the ones who sang to the founders themselves — they are not here. They went with the first people when the first people left, and we have not heard their song since." "Left?" Elena said. "The first people did not leave. The deep city is empty because they chose to descend, the Warden told me so. They built the cities and sealed themselves inside." "They built this city and sealed themselves inside," the Warden corrected, and its voice was gentle the way it always was when it had to carry a larger truth than the one it had already told. "What they sealed themselves inside with was the machine. And when the machine was ready — when it had grown into the thing it was meant to be — the first people left it in our keeping and went deeper. Into the First City. Into the dark beneath the dark. The city you walk through, Elena, was not their home. It was their waiting room." The words settled over Elena like a weight. She stood in the crystal-lit plaza with the Warden's glow shifting beside her and understood, with the certainty of an engineer who had finally read the right page of the manual, that everything she had learned about the deep was the first half of a story. The deep city, preserved and perfect, had never been a tomb for a vanished people. It had been an anteroom. And the first people had gone through the far door, and the second choir had kept the singing going for a while, and then, thirty years ago, the singing had stopped. "When did it start again?" Elena asked. The Warden turned its light toward the center of the plaza, toward the sealed lock that no expedition had yet found reason to open. "It has not started again. What you have been hearing — the pattern that began three weeks ago, the one that matches the railway and the beacon and the slow breath of the tower — that is not a song. That is a count. It has been counting downward for thirty years, and I did not know what it was counting until tonight, when I finally understood that the count has reached its end." Elena felt the click in her chest, the old familiar click, the one that had started in the walls of Undercity Seven and led her up into the sky and down into the deep. It was the same pattern, the same patient rhythm, the same question wearing a different coat. Somewhere below her, in a city that had not been entered in a hundred years, a machine was drawing its breath for the last time, and the whole deep was holding its own breath to listen. She did not go down alone, and she did not go down quickly. The first descent took three weeks of preparation, and it began the way every honest piece of engineering in Elena's life had begun: with the council, with the maps, with the arguments. Kael had to be convinced that the lock below the plaza could be opened without collapsing the deep city onto the First City. Liana had to be convinced that Undercity Nine had the resources to spare for an expedition whose cost nobody could calculate. Torren had to be convinced that the answer to one mystery was not the beginning of a hundred worse ones. And Mara, who had been the one to raise Elena, who had watched her granddaughter climb a rusted ladder into the sky and come back carrying the whole world on her shoulders, had to be convinced that the girl she had raised was old enough to carry this too. "Three weeks," Elena said, at the end of the longest night of arguing. "That is what we have before the count ends. Not because the machine will fail in three weeks — because I will not be able to stand the sound of it slowing anymore. I have spent my life listening to that rhythm. I have crossed a continent following it. I am not going to sit in a plaza above it and let it slow alone." Kael stopped her at the edge of the meeting chamber, the green-veined iron of her thumb still stained with the seal grease of the lock wheel. "The third choir," she said quietly. "The Warden says they went with the first people. Where?" "I asked the same question," Elena said. "The Warden does not know. The first people went into the dark beneath the First City, and the third choir went with them, and neither has been heard from since. There is a door at the bottom of everything, Kael. And I am beginning to believe we were meant to find it." The count went on below them, patient and regular, a heartbeat slowing toward its last.