Mercer stayed five feet above the soldier, keeping Sykes centered in the cone of light from his lamp. The water was polluted with suspended particles too small to identify but too large to be silt. He’d never seen such contaminated artesian water. They should be swimming through water clearer than crystal, not this soup. Sykes didn’t seem bothered by this, but Mercer was troubled. Something was seriously, seriously wrong. He was thinking about aborting the dive and demanding answers from Ira when Sykes slowed his descent.
Mercer checked his depth gauge. One hundred four feet. Sykes was hovering just above the clogged intake, blocking Mercer’s view of the pipe. Mercer finned down next to the soldier and trained his light on the pipe’s terminus.
The mouth of the intake was blocked by a circular piece of white plastic about four feet in diameter, something Mercer didn’t recognize as being in the mine before the flood. In fact, he’d never seen it before. The tremendous suction from the topside pump had warped the plastic, extruding it into the coarse mesh that prevented debris from flowing up the line. The plastic was so deformed that reversing the pump had only lodged it tighter.
Sykes pulled out his board and a grease pencil and drew a sharp question mark.
Mercer shook his head. He had no idea what they were looking at. Both men levered their pry bars next to where the plastic had bent around the steel pipe, heaving in concert to peel an inch of the disk from the intake. They shifted the levers and repeated the maneuver, working their way around the pipe like they were opening a can. The intake mesh had gouged a waffle pattern into the plastic that locked the two like Velcro. It took several minutes of heavy work before the disk popped clear. It floated free, bobbing in the currents formed by their effort. As it slowly revolved, the side pressed into the intake danced into the beams of the lights. The lettering printed around the perimeter was perfectly legible: RYLANDER CRUISE LINES. THE HAPPY SHIPS.
The mysterious disk was a plastic tabletop, one of several dozen usually found arranged around the swimming pool on a cruise ship. An unremarkable artifact in and of itself, something that probably gets lost at sea quite often when the weather’s rough, but how had it gotten stuck eight hundred feet under solid rock a good four hundred miles from the nearest ocean?
Sykes didn’t need to redraw his question mark. The confusion was in his eyes.
Mercer grabbed his own board and wrote for a moment. We’re going down the tunnel to the working face. Calculate our air time.
Sykes shook his head. Mercer jiggled the board, emphasizing his demand. Again, the commando shook his head. Mercer erased his message and wrote another.
I’m going with or without you.
Wasting just another second with silent defiance, Sykes checked Mercer’s gauges and his own and typed the numbers into the dive computer strapped to his wrist. He read the numbers and wrote: We’ve got forty minutes at this depth. More where the tunnel branches off.
Mercer used a snap clip to attach an air bag to the tabletop and pulled the lanyard that inflated the rubber sphere. The table rose into the murk. They’d haul it onto the elevator when they finished the dive. He started for the tunnel, confident that Sykes was right behind him. At sixty-seven feet they reached the tunnel. Mercer twisted in and continued on, swimming in smooth strokes that pushed him through the water with minimal effort. He didn’t even consider the last time he’d been in this tunnel was when the flood had claimed Ken Porter’s life. He focused entirely on what lay beyond the dike they’d blasted through. There had never been a subterranean lake — at least not until four months ago. The water looked and tasted like seawater because that’s exactly what it was. And the answer to how it got to the middle of the Nevada desert lay a quarter mile ahead.
He had to force himself not to rush. In his wake he left a steady trail of bubbles as he drew deep, even breaths. His light receded from him as he swam, like the corridor from a nightmare that never ends. It took seven minutes to reach the site of the explosion. All the debris from Donny Randall’s final blast had been swept away in the flood. Most of the working face was gone too. Only jagged chunks of rock hanging from the ceiling and jutting from the floor like rotted teeth marked this as the spot where Ken had died.
Mercer didn’t slow. But as he pushed through the shattered dike, his light vanished, the beam swallowed by an enormous chamber. Mercer stopped dead in the water, trying to adjust to the sudden change from the tunnel’s claustrophobic confines. Sykes swam up next to him. He played his light around. The water was too deep to see the floor and the walls were lost from view. He flashed his beam upward and tapped Mercer on the shoulder.
The light bounced off the water’s surface forty feet overhead. The pumps had drained the reservoir to the same level as the main shaft where the elevator waited.
They didn’t need to confer to know what to do. Sykes watched his depth gauge and worked his computer to calculate decompression stops. No matter what they found, they had five minutes before they had to return to the elevator car.
A moment later they broke the surface. Mercer swept his beam around in a circle, the light penetrating much farther through air than the water. The chamber was at least five hundred feet across, and the ceiling was a dome lofting a hundred feet above them. The cave’s walls were smooth and curved, like the interior of a stone sphere that had been polished to perfection.
All of this he saw in a quick glance, an impression more than an observation, because something else had caught his attention. As confused as he was about finding seaweed and as stunned as he was discovering the table, what he saw now defied all logic.
Even in the low light of a single dive lamp, the size and silhouette were unmistakable. Floating serenely in the middle of the underground lake was the dull gray shape of a submarine.
ABOARD THE MV SEA SURVEYOR II THE PACIFIC, 500 MILES SOUTHEAST OF MIDWAY ISLAND
Charlie Williams didn’t like his position one bit. In fact, he hated it. And to make matters worse it was his own fault. He hadn’t noticed how his opponent had shifted pawns to open up his rook, and now the white castle was decimating his few remaining pieces. With his queen effectively pinned by the pair of table-hopping knights, it was inevitable that he’d lose the game. His only solace was that this was only the fifth game of chess he’d ever played and the ship’s third officer, Jon Carlyle, had needed fifteen more moves to beat him than their last game.
Charlie’s wife, Spirit, sensed her husband’s frustration and looked up from the book she’d borrowed from the ship’s small library, a biography of Alfred Watkins, the discoverer of England’s purported geomagnetic ley lines. Besides the glow of instruments and the wash from Charlie’s laptop where the game was being played out, her lamp was the only spot of illumination on the bridge of the Sea Surveyor II. Beyond the large windows, the night was starless and the ocean calm. The door to the bridge wing was open and a tropical breeze cut the ozone smell of electronics.
“C.W.,” she called in a voice that could have made her a fortune as a phone sex operator, “I hate to say this, lover, but even if chess’s most powerful piece is female, the game itself is based on misogynist ideas of class warfare in which the goal is to keep an impotent king alive while pieces get sacrificed with little regard to what they’d mean in the real world. I think it’s good that you keep losing. It means you’re enlightened.”