Diogo

The drawing he was working on was a section through a retaining wall on the Rua das Pedras Negras. Nothing ambitious — a wall that had been built wrong in the previous decade and was now beginning to fail, its footings undermined by the runoff from the alley above. He had identified the problem in August. He had submitted the report in September. This morning he was completing the remediation drawings, which no one had asked for but which he had prepared anyway, because walls did not correct themselves.

The bells began at nine. The Sé first, then São Domingos, then the smaller churches in sequence, until the sound was layered and continuous — forty voices, roughly, if you knew the city well enough to distinguish them. He could. Feast of All Saints: the churches would be full by now, candles burning on every altar, the families of the dead assembled and patient in the nave. His own family would be at the Igreja do Carmo in the Chiado. He had promised to join them after the morning's work.

He set down his compass and looked at the light on the river. The Tagus was very bright this morning, the kind of flat silver light that came in November when the air was clear and the sun still low. He could see two boats moving upstream, heavily loaded, their progress slow against the current. There was no wind. The city smelled of incense and horse dung and the cold of early morning, before the kitchen fires had built.

He picked up his compass.

The first tremor was beneath his feet before he heard it — a low pressure, a shifting of the floor as if something massive had passed under the street. He thought, for half a second, of the laden carts that sometimes came down from the upper city and shook the building to its joists. Then the sound reached him: not a cart. Not anything he had a word for. A grinding from underground, from everywhere, from the walls themselves.

He was at the window when the second tremor hit. He grabbed the frame. Below him the cobblestones of the Terreiro do Paço were moving. He could see it — a rippling, like the surface of disturbed water, stone behaving as stone should not. A crack opened across the square, east to west, perhaps a metre wide. People running. The bells had stopped. He could not have said when they stopped.

The wall behind him failed. Not the retaining wall on the Rua das Pedras Negras — the wall of this room. A crack opened from the ceiling to the floor in three seconds, plaster raining down, and then the shelves of rolled drawings came free and he threw himself under the drafting table as the ceiling came down in sections. Not all of it. Enough.

He lay still for a moment, his hands over his head. The roaring had stopped. Dust, very thick. He could feel the table's weight across his back — against him, not crushing him. He tested his arms. His legs. He pushed himself sideways and stood.

The room was wrecked. The archive wall had come down entirely: two years of survey records, plan drawings, deposition summaries, all of it under the rubble. The window frame was intact and the glass was gone. He stepped through it.

The square was changed. He understood before he could articulate it that what he was seeing was permanent — not a bad moment from which the city would recover in an hour, but an alteration. The Ribeira Palace's south wing had partially collapsed. The columns at the water gate had come down. He could see a fissure five metres wide running from the palace steps to the middle of the square, where it disappeared under the rubble of a section of arcade. People were sitting on the cobblestones, incapable. A man in a merchant's coat was looking at his hands. A woman had fallen and not risen and no one was going near her.

He looked at the river.

The Tagus was draining. He had to look twice to understand it. The water level was dropping — visibly, at a rate he had no framework for — exposing a mudflat of dark silt and old timber, the buried wreckage of decades, stretching fifty metres out from the quay. The boats that had been moving upstream were grounded. On the far bank he could see the Alfama hillside, intact, its tangle of streets apparently undamaged, the castle still standing above it. He looked at the exposed riverbed and then he looked at the people beginning to move toward it — toward the mud, toward the shapes of things half-visible in the silt.

He began to shout. He could not be certain how many heard him. Some stopped. Some were already too far down the steps.

He shouted until the roar came.

It came from the south and west simultaneously, or it seemed to — a sound he felt in his chest before he understood it as sound. The water returned as a wall. He was already running. He went left along the arcade, away from the waterfront, toward the first street that led uphill. He did not look back. He could hear it behind him: the weight of it, the freight of it, the specific sound of water destroying things. He ran up the Rua dos Ourives through rubble he had to climb rather than step over, his boots sliding on wet plaster, his hands on broken stone. He passed a man who was sitting against a wall with his mouth open and could not seem to move. He passed a child running, alone, without direction. He kept moving up.

The fires had already started before he reached the high ground. He could see them from the hillside to the east of the Chiado: three points of smoke, already thickening, already moving toward each other in the still air. The Baixa below him was silent in a way that cities are not silent — a negative silence, the silence of everything that should be making noise having stopped. He stood for a long time. A group of survivors were gathering on the hillside above him, some of them injured, most of them not. No one spoke. They watched the smoke.

The archive was in the ruins below. The drawings, the survey records, the deposition summaries — all of it under the rubble of the works office, or under the wave that had come after. Two years of documentation. He thought about this in the careful way that one thinks about a bad number in a calculation: methodically, without panic, working out what could be reconstructed and what could not. Ownership records. Survey depositions. The map he had been compiling since July of the Baixa's structural condition.

He wrote nothing in his notebook that evening. He had nothing to write with. He had the notebook itself — in his coat pocket, where he always kept it — and he had a stub of pencil. He opened the notebook to the first blank page and he wrote the date and the time, as close as he could estimate it: 1 Novembro 1755. 09:40h, approximately. He drew a line across the page. Then he closed the notebook and stood watching the fires spread through the lower city until the light failed.

He could see his family's house from the hillside. He knew which corner of the Baixa it stood on. He looked for it. Where it had been there was smoke.