He didn't reply. This bargain didn't need to be formalized.

The only thing worse than the bridges was the trolley span. The trolley box was made of basketwork. Selden stood up in it to work it while she sat in the saggy bottom and wondered if it were going to give way any second. She gripped the edge of the basket tightly and tried not to think what would happen if the rope gave way.

The trolley span ended in the limbs of a great tree. A walkway spiraled around its trunk to the ground. By the time they reached the solid earth, her legs were like jelly, not just from nervousness but from the unaccustomed exercise. She looked around in the darkness, baffled. “This is the city?”

“Not really. Most of these are buildings the Rain Wilders put up to work in. We're on top of the old city. Come on. Follow me. I'll show you one of the ways in.”

The log buildings were set cheek by jowl. Selden led her through them as if they were a garden maze. Once they crossed a wider road set with torches. She concluded that there were probably more prosaic ways of reaching the buried city. They had come by the path that the children. used. Selden glanced back at her as he led her on. She caught the flash of excitement in his eyes. He led her eventually to a heavy door made of logs. It was set flat to the ground like a trap door. “Help me,” he hissed.

She shook her head. “It's chained shut.”

“It only looks like it is. The grown-ups don't use this way anymore, because part of the tunnel caved in. But there's room to get through, if you aren't too big. Like us.”

She crouched down beside him. The door was slippery with mold. Her fingernails slid on it, filling them with dirt. But it opened, revealing a square of deeper night. With small hope she asked Selden, “Are there torches down there, or candles?”

“No. You don't need them. I'll show you. You just touch this stuff and it lights up a little bit, but only while you're touching it. It's not much, but it's enough to go by.”

He clambered down into the darkness. An instant later, she saw a dim glow around his fingers. It was enough to outline his hand on the wall. “Come on. Hurry up.”

He didn't say she had to shut the door and she was glad not to. She groped her way down into the darkness. It smelled of damp and stagnant water. What was she doing? What was she thinking? She gritted her teeth and set her hand beside Selden's. The result was astonishing. A sudden bar of light shot out from beneath her fingers. It ran the length of the tunnel before them before vanishing around a curve. Along the way, it arched over doorways. In some places, runes shone on it. She froze in astonishment.

For a time, Selden was silent. Then he said doubtfully, “Reyn showed you how to do that, didn't he?”

“No. I didn't do anything except touch it. It's jidzin.” She cocked her head. Strains of music reached her ears from far down the hall. It was strange. She could not identify the instruments, but it was oddly familiar.

Selden's eyes were very wide. “Wilee told me that Reyn could make it do that, sometimes. I didn't believe him.”

“Maybe it just happens sometimes.”

“Maybe,” he agreed doubtfully.

“What is that tune? Do you know it?”

He frowned at her. “What tune?”

“That music. Very far away. Don't you hear it?”

Silence held for a long time. “No. I just hear water dripping.”

After a moment, she asked, “Are we going to go on?”

“Of course,” he said doubtfully. He walked more slowly now, trailing his fingers along the strip of jidzin. She followed him, copying him. “Where did you want to go?” he asked after a minute.

“I want to go to where the dragon is buried. Do you know where that is?”

He turned and looked at her with a furrowed brow. “A buried dragon?”

“That's what I heard. Do you know where that is?”

“No.” He scratched his cheek with dirty fingers, leaving brown stripes. “I never heard of that.” He looked at his feet. “Actually, I didn't go much past the caved-in part.”

“Then take me there.”

They moved in silence now. Some of the doors they passed had been broken open. Malta peered in hopefully as they passed. Most led only to collapsed chambers full of earth and roots. Two had been cleared of debris, but held nothing of interest. Thick glass windows looked out on walls of earth. They went on. Sometimes the music seemed clearer, sometimes it faded. A trick of the tunnels, she decided.

They came to a place where the ceiling and one wall had given way. Earth had cascaded across the stone floor. With his free hand, Selden pointed up the pile of debris toward the ceiling. He whispered, “You have to climb up there and squeeze through. Wilee said it's tight going for a short way, and then you come out again.”