"It's been fading steadily, but we've still got them."

"Warn them we'll be moving in and out of corridors from now on and likely only have erratic contact. All right, Nichols; drive us over there."

Hafner's hunch proved to be correct. Behind the door was another corridor, parallel to the entrance tunnel and with perhaps four times its cross-section.

Mounted up off the floor, disappearing away to infinity in both directions, was a huge solenoid.

"A particle accelerator?" Nichols whispered as they stood and stared at the monster coil.

"Who knows?" Hafner shrugged. "All we know for certain is that it knocks out repulser plasmas."

Meredith muttered something; apparently, he hadn't made the connection. "You mean some sort of resonance effect with this thing is what wrecked our flyers?"

"Or with one of the pieces of equipment you can see hooked into the solenoid in places," Hafner said. "Must be a tremendous field inside the coil if the stuff that leaks out is that strong."

"Wonder what it's for," Barner said. "Any ideas?"

"Could be practically anything." Hafner shook his head. "This whole place is incredible. Why on Earth would anyone go to the trouble to build something like this?"

"Maybe it was their normal mining method," Perez suggested. "This is impressive, certainly, but so are off-shore oil rigs and the Exxon Tower."

"Then where's the rest of their civilization?" Nichols objected. "They should've left some other traces behind."

"After a hundred thousand years?"

"We find fossils older than that on Earth."

"Actually, the Spinners probably weren't native to this system," Meredith interjected. "Possibly not to this entire region of space. Let's get back to the car and move on."

"What's your evidence the Spinners were strangers here?" Perez asked when they were again driving down the main tunnel. "Lack of fossils hardly counts—nobody's really been looking for them."

"How about lack of other cable-material structures?" Meredith countered. "Not just here, but elsewhere in the system? Remember, the Rooshrike did a pretty complete survey of this place when they first ran across it. Besides, if they lived anywhere near here they ought to at least be hinted at in Rooshrike archaeology or legends."

"Maybe they are," Hafner said. "Stories of godlike creatures and all could be references to them."

"The computer doesn't think so. All the appropriate mythological figures are too similar to Rooshrike themselves to be aliens."

"But after several thousand retellings—"

"Hold it!" Barrier barked, cutting Hafner off and causing Nichols to stomp on the brakes. "On the right, down the corridor we just passed—looked like a hole in the rock."

Nichols backed the car up the necessary few meters and turned off to the right.

Hafner leaned forward, peering over Meredith's shoulder. Sure enough, where the metal walls and lights ended, the tunnel continued on. "You've got good eyes, Major," he commented.

"They're no better than yours," Bamer replied, a bit tartly. "I just use mine, that's all."

Hafner reddened and shut up.

The corridor ended in what had once been a T junction with another hallway; the rough tunnel Bamer had spotted led through the crossbar of the T, as if someone had planned to extend the corridor and never completed the job. "Sloppy work,"

Nichols commented, running his fingers over the rough stone within the hole.

"Must've had their funding cut."

"I don't think so," Meredith said. "Note that the whole wall's been left open to the rock here, as if they'd planned to drill into it."

Hafner stepped back and looked down the hallway. "You're right—looks like another hole down there, just past that vertical support bar."

Meredith produced a flashlight from his pack and aimed it into the tunnel. "Goes pretty deep … well, well. Looks like there's something metallic back there."

Shifting the light to his left hand, he ducked his head and stepped carefully into the passageway. "Everyone wait here and keep your eyes open. I'll be back in a minute."

It was more like five minutes before the colonel reappeared. "Well?" Perez demanded as Meredith put away his light.

"Hard to be sure, of course, with an alien design," Meredith said, "but the thing back there seems to be an automated digging machine."

"So they were extending this tunnel," Nichols said.

"Or else mining the rock for the nonmetallic elements the leecher doesn't get,"

Hafner suggested. "Maybe hauling the digger out would give us a clue."

"I wouldn't recommend that," Meredith said. "The thing's still active."

They all turned to face him. "It's what?" Hafner said, cocking an ear toward the tunnel.

"Oh, it's not actually running—there's a rock jammed between two of the track links. But there's something that looks like a display panel in the rear, and a halfdozen lights are still showing on it." Meredith brushed at the dust that had collected on his shoulders and headed back toward the car. "Come on; let's keep moving."

They returned to the main corridor and continued on inward, driving for the most part in silence. It shouldn't have been such a shock, Hafner told himself—they all knew, after all, that the main Spinneret machinery was still operational. Somehow, though, he'd always pictured the Spinneret as an essentially solid-state apparatus, barely surviving through the grace of multiple redundancies. For a small peripheral unit—and a tunneling machine, at that—to be in equally good shape was both awesome and just a little bit creepy.

The corridor made a thirty-degree angle to the left … and without warning, they were abruptly in a new world.

"Snafu on toast," Barner gasped, craning his neck to look up. "What the hell is this?"

Like Barner, Hafner's eyes were drawn first upward, to the impossible blue sky overhead. Fluffy white clouds drifted visibly by, occasionally cutting across the shining yellow sun midway to zenith … it was nearly a minute before he could tear his gaze away and focus on the village scene around them.

His immediate impression was that they'd driven into a replica of Jerusalem's old city. White-walled, domed buildings squeezed closely together along narrow, winding streets, while in the near distance a decorative wall cut in front of a minaret-like tower. A closer look, though, showed him the myriad of architectural differences between these buildings and anything he'd ever seen on Earth. The shapes and positioning of the windows, the elaborate carvings on doors and archways, even the faint iridescence of the walls themselves all emphatically marked the place as alien.

Perez broke the spell first, with a murmured Spanish phrase that sounded simultaneously blasphemous and awe-struck. "This is impossible!" he whispered.

"The sky—but we were a hundred meters underground!"

"It's artificial," Meredith said, and Hafner had to admire the confidence in the other's voice. The geologist had stared at the sky for an entire minute without finding any flaws in the simulation. It was a simulation, of course; it had to be.

"Probably a hologram or something projected on a domed ceiling," Meredith continued. "Looks like the Spinners were settling in for a long stay here."

"But why underground?" Perez asked, clearly still shaken. "Why not on the surface where they could have real sunlight?"

"Probably wanted a place where they could burn their steaks in peace," Nichols said, sneezing violently. "Or can't you smell that mess?"

Hafner sniffed cautiously. He hadn't really noticed the odors drifting in on the breeze, but now that he was paying attention he discovered Nichols was right. A

faint smell that indeed resembled burnt meat was dominant; but beneath it he could detect traces of jasmine, sulfur, and something like a cross between rusty iron and oregano. "Whoo-ee," he said. "Smells like someone burned down a kitchen pantry."