"Too dangerous. You might get hung up and trapped."
"Not if I keep from entangling my safety line," Pitt said easily.
On the surface, Giordino studied his watch. "You've been down sixteen minutes. How's your air?"
Pitt held his pressure gauge in front of his face mask. He could barely read the needle through the maelstrom of silt. "Good for another twenty minutes."
"I'll give you ten. After that, at your present depth, you'll be looking at decompression stops."
"You're the boss," Pitt came back agreeably.
"What's your situation?"
"Feels like I'm being pulled into a narrow tunnel feet first. I can touch the walls closing around me.
Lucky I have a safety line. Impossible to swim against the surge."
Giordino turned to Miller. "Sounds as if he may have a lead on what happened to your divers."
Miller shook his head in anger. "I warned them. They could have avoided this tragedy by keeping their dive in shallow depths."
Pitt felt as though he was being sucked through the narrow slot for an hour when it was only twenty seconds. The silt cloud had faded slightly, most of it remaining in the deep pool behind. He began to see his surroundings more clearly. His compass showed he was being carried in a southeasterly direction.
Then the walls suddenly opened out into one enormous, flooded room. To his right and below he caught the momentary flash of something glinting in the murk. Something metallic vaguely reflecting the silt-dimmed beam of his dive light. It was an abandoned air tank. Nearby was a second one. He swam over and peered at their pressure gauges. The needles were pegged on empty. He angled his dive light around in a circle, expecting to see dead bodies floating in the darkness like phantom demons.
The cool bottom water had drained away a measure of Pitt's strength and he could feel his motions becoming sluggish. Although Giordino's voice still came through the earphones as clearly as if Pitt was standing next to him, the words seemed less distinct. Pitt switched his mind off automatic and put it on full control, sending out instructions to check data gauges, safety line, and buoyancy compensator as if there were another Pitt inside his head.
He mentally sharpened his senses and forced himself to be alert. If the bodies were swept into a side passage, he thought, he could easily pass them by and never notice. But a quick search turned up nothing but a pair of discarded swim fins. Pitt aimed the dive light upward and saw the reflective glitter of surface water that indicated the upper dome of the chamber contained an air pocket.
He also glimpsed a pair of white feet.
Trapped far from the outside world in a prison of perpetual silence, breathing in a small pocket of air millions of years old and lying smothered in total blackness deep under the earth is too alien, too terrible to imagine. The horror of dying under such terrifying conditions can provide nightmares on a par with being locked in a closet full of snakes.
After initial panic had passed and a small degree of rationality was retrieved, any hope that Shannon and Rodgers had of surviving vanished when the air in their tanks became exhausted and the final spark of life in the batteries of their dive lights gave out. The air in the small pocket soon became foul and stale from their own breathing. Dazed and lightheaded from lack of oxygen, they knew their suffering would only end when the watery chamber became their tomb.
The underground current had sucked them into the cavern after Shannon had excitedly dived to the bottom of the sinkhole after glimpsing the field of bones. Rodgers had faithfully followed and exhausted himself in a frantic effort to escape the surge. The last of their air had been used up in a vain attempt to find another passage leading out of the chamber. There was no exit, no escape. They could only drift in the blackness, held afloat by their buoyancy compensators, and wait to die.
Rodgers, for all his guts, was in a bad way, and Shannon was just hanging on by a thread when suddenly she noticed a flickering light in the forbidding water below. Then it became a bright, yellow beam stabbing the blackness in her direction. Was her numbed mind playing tricks? Did she dare entertain a glimmer of hope?
"They've found us," she finally gasped as the light moved toward her.
Rodgers, his face etched and gray with fatigue and despair, stared blankly down at the approaching light beam without reaction. The lack of breathable air and the crushing blackness had left him in a near comatose state. His eyes were open and he was still breathing, and, incredibly, he still tightly grasped his camera. He felt a vague awareness that he was entering the tunnel of light described by people who returned from death.
Shannon felt a hand grab her foot, and then a head popped out of the water less than an arm's length away. The dive light was beamed into her eyes, momentarily blinding her. Then it moved onto Rodgers's face. Instantly recognizing who was the worse off, Pitt reached under one arm and took hold of an auxiliary air regulator that was connected to the dual valve manifold of his air tanks. He quickly slipped the mouthpiece of the regulator between Rodgers's lips. Then he passed Shannon a reserve pony bottle and air regulator that was attached to his waist belt.
Several deep breaths later, the revival in mood and physical well-being was nothing short of miraculous. Shannon gave Pitt a big bear hug as a renewed Rodgers pumped his hand so vigorously he nearly sprained Pitt's wrist. There were moments of speechless joy as all three were swept away in a euphoria of relief and excitement.
Only when Pitt realized that Giordino was shouting through his earphones, demanding a situation report, did he announce, "Tell Doc Miller I've found his lost lambs. They are alive, repeat, they are alive and well."
"You have them?" Giordino burst through Pitt's earphones. "They're not dead?"
"A little pale around the gills but otherwise in good shape."
"How is it possible?" muttered a disbelieving Miller.
Giordino nodded. "The Doc wants to know how they stayed alive."
"The current swept them into a chamber with an air pocket in its dome. Lucky I arrived when I did.