Chapter 1

The plane from Bamako came down over the river before it came down over the city, and for a few minutes Julian Marchetti pressed his forehead to the scratched window and saw the Niger the way the old geographers must have seen it: a long brown argument between water and sand, with the sand winning at the edges. Beyond the river the land flattened into a pale, shimmering nothing. He had read about that nothing for eleven years. He had measured pieces of it in drill cores and satellite scans and the dry numbers of other people’s surveys. None of it had prepared him for how much of it there was.

“Your first time?” asked the man across the aisle, a Malian in a pressed grey shirt who had spent the flight reading a folder of invoices.

“To Timbuktu, yes. To the Sahara, no. Mauritania, years ago. Libya, before everything.”

The man nodded, as if this were a modest credential, and returned to his invoices.

The airstrip was a low building and a great deal of heat. Julian came down the steps into a light so white it seemed to have weight, and he stood for a moment with his hand raised against it, a tall man in a field shirt too new for its pockets. He was thirty-six and looked, in the way of men who spend their lives outdoors in the company of rocks, both older and younger than that: lines at the eyes, hair still thick and dark, a careful stillness in the face that colleagues took for confidence and that was closer to caution. He had grown up in Carrara, in the white dust of the marble quarries, the son of a man who could tell the quality of a block by the sound it made under a hammer. Stone, in his family, was something you listened to. People were something you were polite to.

His equipment came off the plane last: two hard cases, a tripod bag, a long tube of rolled maps. A young official examined his papers with slow attention, then examined the cases, then asked in French what was inside.

“Instruments. For measuring rock and soil. Everything is on the permit.”

“Yes,” said the official, though he said it as if he were agreeing to something else. He photographed the cases with his phone, a small gesture, and Julian was too tired and too dazzled to wonder why. Then he was waved through, and a driver named Ibrahima, sent by the guesthouse, was loading everything into a dented white Toyota and talking cheerfully about the dust.

Timbuktu did not look like its legend. Julian had known it wouldn’t, because he had read enough to distrust legends, but part of him had still expected something. What he got was a low city the color of the ground it stood on, mud-brick walls the shade of old bread, sand drifted deep into the lanes and against the doors. Donkeys. Children in school uniforms the blue of sky. A mosque in the distance whose wooden spikes stuck out of its walls like quills. Everything was the same color, and then, around a corner, a door painted a startling green, and a woman in a wrapper of yellow and red walking past it with a basin on her head.

“The old people say the city is a pile of sand with a good reputation,” said Ibrahima, and laughed.

“It had a reputation worth having,” Julian said.

“It had gold. Now it has Julian Marchetti.” The driver glanced at the paperwork on the dashboard, pleased with himself. “Salt, my friend. You are here for salt. Everybody asks, so I will tell them.”

“Please don’t tell everybody.”

“Of course.” But Ibrahima had the cheerful air of a man who had already told several people.

The guesthouse stood behind a plain wall in the old quarter. Inside was a courtyard with a single tree, a well that no longer drew water, and a room whose ceiling fan turned with the reluctance of a creature woken early. Julian set the cases against the wall. He sat on the edge of the narrow bed and looked at the rolled tube of maps without opening it, the way a man looks at a letter he has already read many times.