Dura saw a cylinder longer than a Crust-tree trunk. Its end was sharp, protruding over the lip of the surface. Perhaps it was a stylus, as she’d seen Deni Maxx use in the Hospital. She tried to imagine the hand that could grasp a tree trunk and use it to write notes… Beside the “stylus” there was another cylinder, but this was set upright. It seemed to be hollow — the cylinder was transparent to Dura’s eyes, and she could make out a structure of thick walls surrounding an empty space — and there was no upper surface.

She frowned and pointed out the second cylinder to Hork. “What do you think that is? It looks like a fortress. Perhaps the Ur-humans needed to shelter — perhaps they came under attack…”

He was laughing at her, not unkindly. “No, Dura. You’ve lost the scale. Look at it again. It’s maybe — what? — ten thousand mansheights tall?”

“Ten times as big as your glorious Parz City.”

“Maybe, but that’s still only ten centimeters or so. Dura, the Ur-humans were meters tall. The hand of an Ur-human could have engulfed that cylinder.” He was watching her slyly. “Do you see it yet? Dura, that’s a food vessel. A cup.”

She stared. A cup, large enough to hold a dozen Parz Cities?

She tried to keep thinking. “Well,” she said, “then it’s a damn odd cup. All the food would float out of the top. Wouldn’t it?”

Hork nodded grudgingly. “You’d think so.” He sighed. “But then, there are many things about the Ur-humans we can’t understand.”

She imagined this little box of Mantle-stuff from the outside. “It’s as if they created this inner chamber, around the wormhole Interface, as an ornament. A little section of the Star, so they could study Human Beings. We would look like toys to them,” she murmured. “Less than toys; little animals, perhaps below the level of visibility.” She looked at her hand. “They were a hundred thousand times taller than us; even the ‘Pig’ would have been no more than a mote in the palm of an Ur-human child…” She shivered. “Do you think any of them are still here?” She imagined a giant Ur-form floating in through some half-seen door, a face wider than a day’s journey billowing down toward her…

“No,” Hork said briskly. “No, I don’t. They’ve gone.”

She frowned. “How do you know?”

He grinned. “For one thing, that’s what your precious legends tell us. But the clincher is this seat.” He patted its arms. “The Ur-humans set up this place so that we could work their machines. If I move the chair I can mimic anything an Ur-human could have done… Dura, they have made me as powerful as any of them. Do you see?” He probed at the unyielding surface of the chair. “If we had the wit we could operate other devices.” He looked around the ghostly chamber greedily. “There must be wonders here. Weapons we’ve never dreamed of.”

The Ur-humans had meant Star people to come here, to work the devices they left behind, maybe when the Glitches got too bad. Perhaps there was something they were meant to do now… But what?

“Your arrow device doesn’t have an analogue, in the Ur-human chair,” she said slowly, pointing up. “See? So the arrow-thing must be something meant for us alone. Maybe to help us see what’s going on.” She frowned. “It only turned one quarter. What if you turned it again?”

“Only one way to find out.”

He reached for the arrow.

At first he turned it back toward the darkest sector of the scale. Reassuringly the walls of smooth gray material congealed around them, shutting out the chamber of the Ur-humans. And when Hork twisted the arrow the other way the walls vanished, to reveal the vast devices.

“All right,” he said. “Going from the black to the dark gray allows us to see a little more. A little further. And what if I turn it another quarter, to the light gray?”

Dura shrank back despite herself. “Just turn it,” she said hoarsely.

Confidently he twisted the arrow to the third of the four quarters.

Light seemed to bleed out of the Air.

The devices of the Ur-humans, the walls of their ghostly chamber, became still more translucent. And there was darkness beyond those distant walls, darkness which settled on the two humans, huddled as they were within layers of immensity.

Points of light hung in that darkness.

Dura twisted in the Air, staring around. “I don’t understand. I can’t see the walls of the next chamber. And what are those lights?”

“There are no more walls,” Hork said gently. “Don’t you see? No more chambers. We’re looking out into space, Dura, at volumes even the Ur-humans couldn’t enclose.”

She found her hand creeping into his. “And those lights…”

“You know what they are, Dura. They’re stars. Stars and planets.”

“Wake up, Bzya, you useless asshole.”

Hosch was slapping him. Bzya shook his head, blinking to clear his eye. He was surprised to be alive; the Bell should have imploded.

His bad eyecup blazed with pain. He raised a tentative fingertip to it to find the cup filled with sticky matter. His back ached, right at the base, where it had been bent backward against the curve of the Bell.

“So we’re not dead,” he said.

Hosch grinned, his thin face drawn tight with fear. “We aren’t that deep in the underMantle. We can’t be, or the Bell would have collapsed already.” He was kicking at the rim of the hatch frame, trying to splinter it with his heel.

Bzya flexed his hands and toes. He felt a vague disappointment. Fishing wasn’t the safest of occupations; he’d always known it would finish him one day. But not today — not so close to home, and after such a futile, wasted dive. “You’ll make the hatch collapse in if you keep that up.”

“That’s…” Kick “…the idea.” Kick. Kick.

“And what then? Wave for it?”

“You’ve got it.” Kick, kick. “We’ve lost the cable. We haven’t any better options.” The frame was already starting to splinter. The hatch was a disc of wood, held in place by external pressure against the flanged frame. Once Hosch damaged enough of the flange, the hatch would fall in easily.

Bzya glanced out of the window. “We’re not deep enough to crush the Bell, but we’re surely too deep for us. No one’s ever come so deep unaided. We must still be ninety centimeters.”

“Then we’ll become damn legends. Unless you’ve a better idea, you useless jetfart. Help me…”

But Bzya didn’t need to.

With a thousand tiny explosions all around the frame the flange splintered. Bits of wood rattled across the cabin; they flew into Bzya’s face and he batted at them dimly. Then the hatch fell forward, yielding in a moment. Bzya had an instant’s impression of a mass of fluid — dense, amber and incompressible — crowding into the breached cabin.

The wood-lamps died, overwhelmed.

Then it was on him.

It washed over his limbs, forced its way into his mouth and throat and eyecups; it was a hard physical invasion, like fists pushing into him. He could not see, hear or taste anything. He panicked, and twisted his head back and forth, trying to spew the vile stuff out of his lungs. But he could not expel it, of course; he was embedded in this dense, unlivable material — in a layer of it ninety centimeters deep.

His lungs expanded, tearing at the material.

…And they found Air. Fragments, splinters of Air which stung as they forced their way out of his lungs and into his capillaries. His chest heaved, dragging at the fluid around him. There was Air here, but with just a trace of its normal fractional density.

Damn it, maybe I can make it out of this…

Then the burning started.

It was all over his body, like a thousand needles. And inside him too — by the Wheel! — scorching into his lungs and stomach; it flooded the capillaries that coursed through his body, turning the network of fine tubes that permeated him into a mass of pain, every threadlike capillary electric-alive with it.