第52章 The Empty Socket

The rhythm sharpened on the third day out of the Straits, in the middle of the island-strewn south Aegean, where the charts showed a seamount rising from the abyssal plain to within sixty meters of the surface and nothing else at all. Anya had been following the contour the way a tracker follows old spoor — not the modern coast, but the drowned one, the terraced shoreline of the world before the water rose — and where her reconstructed shore crossed the seamount, the spheres went from purring to ringing. She marked it in the notebook with a hand that was not quite steady. "There is something down there," she said. "Something that is still switched on." The sonar gave them the shape of it by evening: a terrace field cut into the flank of the bank, regular as orchard rows, and at the head of the terraces a small hard return that might have been stone or might have been nothing, at this range sonar lied as often as it told. The charts had no name for the bank. The fishing boats that worked its edge called it, according to Dmitri's pilot books, the Old Woman, because it took nets and gave nothing back. They dove at first light — Nikolai and Anya, with Pavel and two of Irina's divers running cover above them, the whole descent rehearsed twice on deck with weights and shackle pins until everyone could do it blindfolded. Sixty meters was shallow after the drowned plain; Nikolai felt almost giddy at how quickly the light came and went around him, blue instead of black, the water warm enough that his hands worked without the dull ache of depth. The terraces resolved out of the haze below him like fields under morning fog, and they were exactly what the sonar had promised: walls of fitted stone, runnels, stairways worn smooth along their centers by feet that had gone up and down for lifetimes before the sea arrived. At the head of the terraces stood the station. It was a foundry in miniature — the same black stone, the same flowing script crowded across every face, but a single disc barely four paces across, and in its center, one socket. One only. The script ran inward around it in a spiral, and where the foundry's great disc had carried seven sockets around its rim, this one carried none. It had never needed them. Whatever had been done here had needed only a compass and someone to carry it. The socket was empty. Nikolai hung above it for a long moment, his exhalations climbing past his mask, while Anya dropped beside him and swept her light across the spiral of script. The socket's rim was clean. Not broken, not forced, not weathered open — clean, the way a thing is clean when it has been opened by hands that knew it. Around the rim, in a hand finer than the rest, a line of script that Anya traced twice with her finger before she would translate it aloud on the comm. "It says," she said, "the road goes up." Her voice sounded thin and far away through the water. "And then, underneath, smaller: taken inland by the one who stayed. Dated — I think it is a date — in a count I do not know, but it is old, Nikolai. Older than the flood lines on the wall at home. This place was finished before the foundry plain ever drowned." They worked the site for an hour, photographing the spiral, casting the socket rim in silicone, and it went wrong the way things underwater go wrong — suddenly, and all at once. Pavel's cover divers were securing a guide line across a collapsed stairway when the long swell that had been building all morning arrived at the bank and rolled through the terraces like breath through a flute. The surge picked silt off the walls in sheets. Visibility closed from thirty meters to ten to three in under a minute, and in the gray-out something gave way above the stair — a slab the size of a door, levered loose by the pulse of water, sliding down the terrace steps with terrible patience. Pavel saw it coming. He was below it, on the line, and he could have let go and been clear; instead he planted himself against the anchor block and paid out slack, fast and even, keeping the line taut for Anya, who was forty meters back inside the terrace field with the camera rig and could not have found the exit in the soup without it. The slab came down across the channel and struck the block. The block held. Pavel did not entirely. It caught his leg below the knee, pinning tank and harness to the stone, and when Nikolai reached him through the silt the man was lying very quietly on his back, regulator in, eyes open, watching the gray ceiling with the expression of a man doing arithmetic. He was humming. It took Nikolai a moment to understand that the low note was not a song but a shared-air signal, calm as church bells: here, here, come. They got the slab off him with a lift bag and a fulcrum of railing stone, twelve minutes of work in zero visibility that Nikolai would remember afterward only as a series of hands — Pavel's hands steady on the bag line, his own hands stupid with effort, Anya arriving out of the murk with the line in her fist like a woman hauling a boat. They brought him up the terraces along the taut line, three abreast in the gray, and the sea above them lightened by degrees, and they broke the surface into ordinary sunshine with the Akademiya's launch already running toward them. The leg was broken and would heal. Pavel submitted to the splinting with an air of mild inconvenience and asked, as his first full sentence of the day, whether anyone had recovered the camera. They had; Anya had not let go of it from the moment the surge began. That night, sitting outside the sick bay with the leg propped on a kit bag, he told Nikolai about the songs — that his grandmother had sung the same half-words he hummed now, and hers before her, fisher folk from the other side of the sea, and that no one had ever known what language the words were in. "I thought they were nonsense," Pavel said. "Old sounds, the way waves are a sound." He looked at the padded case where the five vault spheres sat in their cradles, beating their slow westward chord. "Now I think maybe they are memory wearing out. A coat handed down so many times nobody remembers it was ever armor." Anya spent that night and the next two days on the triangulation, working by lamplight at the chart table with the notebook open and the reading ring bolted beside her. She took the bearing from the foundry plain. She took the bearing from the empty socket on the Old Woman's bank. Two instruments, two stations, two lines across the paper — and the lines crossed well beyond the Pillars of Hercules, out in the ocean that lay past the end of every map either of them had ever studied, on a bearing that ran, as nearly as she could draw it, straight out into the deep Atlantic. "The flood did not rise in our sea," she said, when she finally showed him the chart. Her finger rested on the empty space west of Gibraltar, where the cartographers of three centuries had drawn sea serpents when they drew anything at all. "It came in from outside. Through the throat at the pillars, and it did not stop until it had climbed every valley it found. And the compass is not pointing at another city, Nikolai. There are cities behind us — the plain, this station, God knows how many more along the old shore. The bearing runs past all of it." She looked up. "It is pointing at where the water came from." That night they anchored in the lee of a nameless islet, and the lights of the world were nowhere among the stars, and the eight circle beat steadily on the foredeck, calling west into the dark, and for the first time since the foundry, faint as a second heartbeat under the first, something called back.