“Pas built them. It’s queer, tellin’ you two that. You ought to tell me. But he did. He did it when he was buildin’ the whorl, so it wasn’t as bad as you’d figure.”

The wine returned to Spider, who drank and wiped his mouth on the back of his hand. “His boys did the real work, accordin’ to the councillor. When we say Pas made it, it just means he had the idea and ran the job.”

“His divine — ah — puissance animated his servants.”

“If you say so. But there was a lot, see? He wanted the job done fast. Mind if I have a little of that?”

Spider took two strips of dried meat from Maytera Mint’s lap. “I’m with him there, I’m the same way. You got a job to do, you do it. Wrap it up and tie the string. Let one drag, and somethin’ always goes queer.” He bit through both strips.

“If they were indeed constructed by Pas, it must have been for some good reason. It’s one of the paradoxes of isagogics—” Maytera Mint looked to Remora for permission to speak on learned and holy topics, and received it. “That Pas, with all power at his disposal, squanders none. He never acts without a purpose, and educes a multitude of benefits from a single action.”

She paused, inviting contradiction. “We sibyls don’t go to the schola, but we receive some education as postulants, and we read, of course. We can also question our augurs if we wish, though I confess I’ve seldom done so.”

“All — ah — admirably correct, Maytera. General.”

Spider nodded. “Councillor Potto said somethin’ like that about the tunnels. We were talkin’ about when they got built.”

“I’d like to hear it.”

“It was while they were buildin’ the whorl, like I said. To start it was just a big hunk of rock. You know that?”

“Certainly. The Chrasmologic Writings emphasize it.”

“So how could they get in and get the rock out? They dug a bunch of tunnels. Then they had to haul in dirt and trees, and pretty soon a big cart would come out and it’d be tearin’ up stuff they just planted. These tunnels are shiprock in lots of places, especially high up. You twig that?”

“Most have been, I believe. Nearly all.”

“All right. They made those before they brought in dirt, see? Up on the surface, only it was bare rock then, and now that’s maybe ten, twenty cubits down. They set those stretches up and shoveled dirt around them. Then they could cart in more, and the trees, without tearin’ up what they’d already finished.”

Maytera Mint swallowed bread. “But the deeper tunnels are bored through stone? That’s how our calde described them.”

“Sure, that’s how they got the rock out. Look up at the skylands next time you’re out in the open. Look at how much room there is, just clouds and air, and the sun and the shade, all right? What’s a few tunnels compared to that?”

Remora nodded vigorously. “’How mighty are the works of Pas!’ The, er, initial line of the Chrasmologic Writings, eh? Therefore known to — ah — all. Even laymen. We clergy, um, prone to forget.”

“He pumped water through them too,” Spider continued. “You take the lake. That’s a shaggy lot of water. Think if old Pas had to bring it in barrels. So for the little stuff, he just run pipes down the tunnels, but for big ones like the lake, he put in doors to keep the water out of the ones he wanted to stay dry, and pumped. I could show you a cave by the lake with one of those doors in the back. That’s where Pas pumped in water to fill the lake, and he put in that door ’cause he didn’t want the water to wash back into his tunnels when he was done. That cave used to be under the water when the lake was bigger.”

Spider fell silent, and Maytera Mint remarked, “Something’s troubling you.”

“I was just thinkin’ about a couple things. I told you this side one ends in dirt, and that’s where we bury them?”

She nodded.

“There’s one of those doors in front of the dirt. I guess the big tunnel was one of them they pumped in, and they didn’t want water in it. What we’re in now was probably put in after. Anyway, talkin’ about doors reminded me we’re goin’ to have to bury these culls. It’ll take a lot of diggin’.”

“I had assumed we would,” she said. “You indicated there were two points troubling you. May I ask what the second was? And what the other uses of these tunnels are?”

“That’s the same question two times.” Spider shrugged. “You never asked me why the lake keeps gettin’ smaller.”

“I didn’t suppose you knew, and to tell the truth, I’ve never thought much about it. The water has gone elsewhere, I suppose. Down into these tunnels, perhaps.”

“You couldn’t be any wronger about that, General.”

Remora put his water bottle on the floor between his feet. “You know, eh? Privy to the, um, information?”

“Yes, I’d like to know, too,” Maytera Mint said, “if you don’t mind. And I’ve by no means finished eating yet.”

“It’s all the same. You wanted to know what else they’re good for and somethin’ else. I forget.”

“The second consideration that troubled you.”

“Same thing. The sun shines all the time, don’t it?”

“Certainly.”

“But we get night half the time ’cause the shade’s there. It cools things off, right? When it’s hot, you’re happy to see the shade come down, ’cause you know it’s goin’ to get cooler. Wintertime, you don’t like it so much.”

“Primary. Um, puerile. What — ah — the significance?”

“See this room, Patera? Three doors. Let’s say they’re all shut. No windows, all right? Now s’pose the sun started at that corner there and run over to that one, about as big as a rope. That’s the whorl. That’s what it’s like, see? Goin’ to get pretty hot in here, right?”

“I take your point,” Maytera Mint told Spider, “but I do not understand it. The whorl is very large.”

“Not that big. It’s been goin’ for three hundred years and over. That’s what they say.”

“The, um, fact. Provable in a — ah — many ways.”

“Good here, Patera. It had to be hot enough for people to live in when Pas started it, see?”

Neither Remora nor Maytera Mint spoke.

“But it couldn’t get much hotter or we’d fry. Couldn’t get much hotter with the sun goin’ all the time. So there had to be some way to get shut of the heat.”

“The — ah — outside, eh? Beyond the whorl. The, um, Writings state, hey? An — uh, um — frigid night.”

“You got it. Notice how the wind blows all the time down here? It’s cold, too, colder than up top, anyhow.”

“I, um, fail—”

Maytera Mint interrupted. “I see! Air circulates through these tunnels, doesn’t it, Spider? Some of them must be filled with warm air bound for the night outside. The ones we’ve been in are carrying cold air back to the surface.”

“Bull’s-eye, General. Well, it’s not workin’ as good as it did. You said about lake water goin’ in the tunnels.”

She nodded.

“Suppose it fills a tunnel half up. The wind can’t blow as much, see? If it fills the whole tunnel in just one spot, the wind can’t blow at all. There’s places where the shiprock gave way, too, and wind can’t blow there either. So it’s gettin’ hotter. We don’t notice, ’cause it’s too slow. But talk to old people and they’ll say winters used to be colder, and longer, too.” Spider stood. “I’m goin’ to start diggin’. You want to eat more, bring it along.”

“I do and I will,” Maytera Mint gathered up what remained of her bread and meat, picked up her bottle of water, and rose. The bolt of the outer door clanked back; the shadowy side tunnel beyond was deserted.

“They’ve gone off,” Spider told her over his shoulder. “I’d like to know why they started shootin’ at my boys.”

She sighed. “Because they were Ayuntamientados, I should imagine. Four brave men who had kept Viron secure for years, slain by others who’ve guarded it for centuries. That’s what we’ve come to.”

“Not all, eh?” Remora closed the door behind him. “All the, um. Not, ah, er, fah…” His mouth worked soundlessly.