There was plenty of variety, too, ranging from trees that could have come direct from the forest of any H-congruous world, to the bizarre purple chimneylike tubes, as well as a host of alien species like the flexible globular lattice that Orion had landed in. Ozzie half expected to see a ma-hon growing amid the profusion of exotica.

Covered by the thin layer of loam was an equal diversity of polyp strata, dull ash-gray bands interlocked with stone-brown bulbs and creamy intestinal clusters, knobbly gentian ropes and open-ended maroon cones with puddles of dank water lying at their base. Blue-speckled hazel protrusions in the shape of button mushrooms were common, although they were all over two meters in diameter.

Johansson had been right to call these creations reefs, Ozzie thought. The trees, as they swiftly realized, lived in perfect symbiosis with the polyp. There was no deep layer of soil to support the roots; instead they were supplied with water and nutrients by the coral itself. In return it must slowly absorb the loam formed by their fallen, rotted leaves to regenerate itself.

There were glades, wide patches where no trees grew, filled with bright sunlight. Here the thin sandy soil sprouted a few tufts of grass, or straggly plants giving a curious impression of lifelessness amid the luxuriant growth of the jungle. Each time they came across such a feature they stayed close to the fringe of trees, as if they’d grown afraid of the empty sky.

Ozzie was pretty sure he knew where such uncertainty rose from. Anything could exist in the gas halo, descending on them without warning out of that infinite blue expanse.

“Do you think there are paths here?” Orion asked. “You said Johansson walked back to the Commonwealth from a reef.”

“There could be,” Ozzie admitted. Indeed he was carrying his rucksack in case they did wander onto the start of a path. He’d insisted on the boy and Tochee carrying their essentials as well. They had so little equipment and supplies left they simply couldn’t afford to lose any more. Deep down, he was hoping they really would start the long walk off the reef midway through one of these expeditions. That yearning was a direct reaction to his circumstances. All he was focusing on these days was simple survival. He’d been traveling for so long now he had grown terribly weary of it. The starship had surely flown to the Dyson Pair and returned by now. It was a depressing thought that the answer would be waiting for him when he returned home, a brief historical note within the unisphere.

When he did catch himself indulging in such wistful speculation he grew angry. After enduring so much he deserved to find the adult Silfen community.

“I know when we’re on a path these days,” Orion said. “I can feel it.”

“I believe I may share that awareness,” Tochee said. “There is no logic to the knowledge, which is difficult for me, but I sometimes find an inner certainty.”

Ozzie, who had possessed that particular trait for some time, kept quiet. The really good thing about getting home would be dropping Orion and Tochee off in a decent hotel and getting the hell away from their constant inane chatter.

The handheld array reported they were drawing near to the geometrical center of the reef; it was hard to define the exact point outside of an area a couple of hundred meters in diameter, although they were certainly halfway between the tips of both end spires. A good visual clue was in the size of the trees, which were getting a lot taller. Why, though? Is the center the oldest part? That doesn’t make a lot of sense. Nonetheless, their trunks were massive here, several meters across, leaving the ground directly beneath them arid and dusty. The surrounding polyp had cracked, with long dead flakes lifting up like jagged teeth around the bark. Overhead, the ceiling of branches and leaves was so dense that the light had reduced to a pale uniform gloaming.

“It’s lighter up ahead,” Orion said. A glare of sunlight was filtering past the trunks. They walked toward it, squinting after so long in the gloomy silence of the great trees.

The light came from a clearing over a kilometer wide. For once there was a blanket of greenery covering the ground, a plant as tenacious as ground eldar but with slim ankle-high jade-green leaves that rustled like rice paper. A fence of the purple polyp tubes formed a neat perimeter, towering above the thick trees, each one curving around high above them so their ends were aligned horizontally out across the reef.

“They’re chimneys!” Orion declared. White vapor was oozing out of each one, twirling away above the treetops. Ozzie recalled the odd riverlike ribbons of cloud they’d seen on their approach.

Orion immediately dropped down and pressed his ear to the ground.

“Friend Orion, what are you doing?” Tochee asked.

“Listening for the machines. There must be factories in the caves down there.”

“I do not detect any electrical or magnetic activity,” Tochee said.

“Calm down, man,” Ozzie said. “Think about this: Factories to make what?”

Orion gave him a puzzled look, then shrugged. “Dunno.”

“Okay, then. Let’s not jump to conclusions.”

“There is something in the middle of the clearing,” Tochee said.

Ozzie used his inserts to zoom in. A squat black pillar stood by itself in the middle of the rustling sea of leaves. “Now that’s more like it.”

Orion got there first, leaping on ahead, each giant step sending him gliding three or four meters through the air. Ozzie took more cautious steps, keeping a wary eye out on the sky above, while Tochee slithered along at a modest speed.

The pillar was three meters tall, standing on a broad patch of bluish polyp devoid of any soil or plants A ring of symbols had been engraved halfway up, made from long thin strokes curving at all angles, with several orbital dots. All the grooves and indentations had been filled with a clear crystal. Ozzie scanned them with the handheld array, and whistled at the result. “Diamond. That’s one mother of an expensive anticorrosion application.”

“What kind of runes are they?” Orion asked. The symbols bore a slight similarity to ideograms, but not in any human language. “Is it like a signpost for paths?”

“I don’t have any reference,” Ozzie said. “How about you, Tochee?”

“I regret not.”

Ozzie began to scan the ground, which was solid enough. None of his sensors could detect any kind of cavity beneath the pillar. Nor was there any electrical activity, no circuits buried just below the surface. He gave the pillar an aggravated look as an excited Orion hurried around it, the boy’s eager fingers tracing the lines on all the symbols. Then Ozzie looked back across the open expanse of the glade, an unwelcome conclusion dawning in his mind.

“Shit!” Ozzie spat brutally. “Shit shit shit.” He aimed a kick at the base of the pillar. It hurt his toe, so he kicked it again, harder. “Ouch!” Kick with the other foot. “I do not fucking believe this, man.” All the frustration, all the rage that had been building inside him, was rushing out; vented on this one simple artifact. He hated it for what it was, everything it represented.

“What’s wrong, Ozzie?” Orion asked quietly. The boy was giving him an apprehensive glance.

“What’s fucking wrong? I’ll goddamn tell you what’s wrong.” He kicked the pillar again, not quite so hard this time. “I have spent months in the wilderness, eating crappy fruit when all I wanted was a decent steak and fries; actually, I don’t just want it, I dream of it. I’m walking around in rags like something out of the stone age. I haven’t had sex in, like, forever. I’ve been sober so long now my liver is feeling healthy. I’ve been flushed off an ocean in the biggest cosmic joke there ever was. But I put up with it, all this crap, because I know you—yes YOU—are watching and guiding me along, and manipulating the paths so that in the end we’ll meet up. But, oh no, you’ve got to have one more go at making me feel humble, one more time making me the butt of your stinking lame-ass, so-called humor.” He thrust a finger out toward the pillar. “I do not think this is funny! You got that? Are we clear on the meaning of NO, here?”