'Spare me,' Giordino groaned.
As he ran toward the helicopter, he was confronted by Miller.
'Why did you stop?' the anthropologist demanded. 'Good God, man, what are you waiting for? Pull them up!'
Giordino fixed the anthropologist with an icy stare. 'Pull them to the surface now and they die.'
Miller looked blank. 'Die?'
'The bends, Doc, ever hear of it?'
A look of understanding crossed Miller's face, and he slowly nodded. 'I'm sorry. Please forgive an excitable old bone monger. I won't trouble you again.'
Giordino smiled sympathetically. He continued to the helicopter and climbed inside, never suspecting that Miller's words were as prophetic as a lead dime.
The tool kit, consisting of several metric wrenches, a pair of pliers, two screwdrivers, and a geologist's hammer with a small pick on one end, was tied loosely to the safety line by a bowline knot and lowered by a small cord. Once the tools were in Pitt's hands he gripped the air tank pack between his knees. Next he adroitly shut off one valve and unthreaded it from the manifold with a wrench. When one air tank came free, he attached it to the cord.
'Cargo up,' Pitt announced.
In less than four minutes, the tank was raised by willing hands on the secondary cord, connected to the throbbing gas-engine compressor and taking on purified air. Giordino was cursing, sweet talking, and begging the compressor to pump 3500 pounds of air per square inch into the 100-cubic-foot steel tank in record time. The needle on the pressure gauge was just shy of 1800 pounds when Pitt warned him that Shannon's pony bottle was dry and his lone tank had only 400 pounds left. With three of them sucking on one tank, that did not leave a comfortable safety margin. Giordino cut off the compressor when the pressure reached 2500 and wasted no time in sending the tank back down into the sinkhole. The process was repeated three more times after Pitt and the other divers moved to their next decompression stop at three meters, which meant they had to endure several minutes in the slime. The whole procedure went off without a hitch.
Giordino allowed an ample safety margin. He let nearly forty minutes pass before he pronounced it safe for Shannon and Rodgers to surface and be lifted to the brink of the sacrificial pool. It was a measure of his complete confidence in his friend that Pitt didn't even bother to question the accuracy of Giordino's calculations. Ladies went first as Pitt encircled Shannon's waist with the strap and buckle that was attached to the safety and communications line. He waved to the faces peering over the edge and Shannon was on her way to dry land.
Rodgers was next. His utter exhaustion after his narrow brush with death was forgotten at the sheer exhilaration of being lifted out of the godforsaken pool of death and slime, never, he swore, to return. A gnawing hunger and a great thirst mushroomed inside him. He remembered a bottle of vodka that he kept in his tent and he began to think of reaching for it as though it were the holy grail. He was high enough now to see the faces of Dr. Miller and the Peruvian archaeology students. He had never been as happy to see anyone in his life. He was too overjoyed to notice that none of them was smiling.
Then, as he was hoisted over the edge of the sinkhole, he saw to his astonishment and horror a sight that was completely unexpected.
Dr. Miller, Shannon, and the Peruvian university students stepped back once Rodgers was on solid ground. As soon as he had unbuckled the safety line he saw that they all stood somberly with their hands clasped behind their necks.
There were six in all, Chinese-manufactured Type 56-1 assault rifles gripped ominously by six pairs of steady hands. The six men were strung out in a rough semicircle around the archaeologists, small, blank-faced, silent men dressed in wool ponchos, sandals, and felt hats. Their furtive dark eyes darted from the captured group to Rodgers.
To Shannon, these men were not simple hill-folk bandits supplementing their meager incomes by robbing visitors of food and material goods that could be hawked in public markets, they had to be hardened killers of the Sendero Luminoso ('Shining Path'), a Maoist revolutionary group that had terrorized Peru since 1981 by murdering thousands of innocent victims, including political leaders, policemen, and army soldiers. She was suddenly gripped by terror. The Shining Path killers were notorious for attaching explosives to their victims and blasting them to pieces.
After their founder and leader, Abimael Guzman, was captured in September 1992, the guerrilla movement had split into unorganized splinter groups that carried out haphazard car bombings and assassinations by bloodcrazed death squads that achieved nothing for the people of Peru but tragedy and grief. The guerrillas stood around their captives, alert and watchful, with sadistic anticipation in their eyes.
One of them, an older man with an immense sweeping moustache, motioned for Rodgers to join the other captives. 'Are there more people down there?' he asked in English with the barest trace of a Spanish accent.
Miller hesitated and cast a side glance at Giordino.
Giordino nodded at Rodgers. 'That man is the last,' he snapped in a tone filled with defiance. 'He and the lady were the only divers.'
The rebel guerrilla gazed at Giordino through lifeless, carbon black eyes. Then he stepped to the sheer drop of the sacrificial pool and peered downward. He saw a head floating in the middle of green slime. 'That is good,' he said in a sinister tone.
He picked up the safety line that descended into the water, took a machete from his belt and brought it down in a deft swing, severing the line from the reel. Then the expressionless face smiled a morbid smile as he casually held the end of the line over the edge for a moment before dropping it into the unescapable sinkhole.
Pitt felt like the chump in a Laurel and Hardy movie who yells to be saved from drowning and is thrown both ends of a rope. Holding up the severed end of the safety and communications line, he stared at it, incredulous. Besides having his means of escape dropped around his head, he had lost all contact with Giordino. He floated in the slime in total ignorance of the hostile events occurring above the sinkhole. He unbuckled the head straps holding the full face mask securely around his head, pulled it off, and stared up at the rim expectantly. Nobody stared back.
Pitt was half a second away from shouting for help when a roaring blast of gunfire reverberated around the limestone walls of the sinkhole for a solid sixty seconds. The acoustics of the stone amplified the sound deafeningly. Then, as abruptly as the automatic weapons' fire cut the quiet jungle, the harsh clatter faded and all went strangely silent. Pitt's thoughts were hurtling around in an unbreakable circle. To say he was mystified was a vast understatement. What was happening up there? Who was doing the shooting, and at whom? He became increasingly apprehensive with each passing moment. He had to get out of this death pit. But how? He didn't need a manual on mountain climbing to tell him it was impossible to climb the sheer ninety-degree walls without proper equipment or help from above.
Giordino would never have deserted him, he thought bleakly. Never-unless his friend was injured or unconscious. He didn't allow himself to dwell on the unthinkable possibility that Giordino was dead. Heartsick and mad from the desperation welling up inside him, Pitt shouted to the open sky, his voice echoing in the deep chamber. His only answer was a deathly stillness. He couldn't conceive why any of this was happening. It was becoming increasingly obvious that he would have to climb out alone. He looked up at the sky. There was less than two hours of daylight left. If he was to save himself, he had to start now. But what of the unseen intruders with guns? The nagging question was would they wait until he was as exposed as a fly on a windowpane before they blew him away? Or did they figure he was as good as dead? He decided not to wait to find out. Nothing short of the threat of being thrown in molten lava could keep him in that hot, scummy-layered water through the night.
He floated on his back and examined the walls that seemed to reach to a passing cloud, and tried to recall what he'd read about limestone in what seemed a centuries-old geology course in college. Limestone: a sedimentary rock composed of calcium carbonate, a sort of blend of crystalline calcite and carbonate mud, produced by lime-secreting organisms from ancient coral reefs. Limestones vary in texture and color. Not bad, Pitt thought, for a student who pulled a B - in the course. His old teacher would be proud of him.
He was lucky he wasn't facing granite or basalt. The limestone was pockmarked with small hollow cavities and lined with tiny edges. He swam around the circular walls until he was under a small outcropping that protruded from the side about halfway to the top. He removed his air tank pack and the rest of his diving gear, except for the accessory belt, and let it drop to the floor of the sinkhole. All he kept were the pliers and the geologist's pick
