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Corona walked over to one of the end links and lifted it with considerable effort. "They must weigh fifty kilos each."
This is truly light-years ahead of any other discovery," said Oxley, trembling at the incredible sight.
Sarason tore his gaze away and gestured to Amaru. "Get it loaded on board the helicopter, quickly."
The evil-eyed killer nodded silently and began giving orders to his men and a squad of soldiers. Even Corona, Campos, and Matos pitched in. With help from a straining forklift and plenty of sweat, the two sections of chain were manhandled aboard two army helicopters and sent on their way to the desert airstrip.
Zolar watched as the two aircraft became tiny specks in the sky. "Nothing can stop us now," he said cheerfully to his brothers. "A few more hours and we're home free, with the largest treasure known to man."
To Sandecker, the audacious plan to come in through the back door of Cerro el Capirote in a wild attempt to save Loren Smith and Rudi Gunn was nothing less than suicidal. He knew the reasons Pitt had for risking his life, rescuing a loved one and a close friend from death, evening the score with a pair of murderers, and snatching a wondrous treasure from the hands of thieves. Those were grounds for justification of other men. Not Pitt. His motivation went much deeper. To challenge the unknown, laugh at the devil, and dare the odds. Those were his stimulants.
As for Giordino, Pitt's friend since childhood, Sandecker never doubted for an instant the rugged Italian would follow Pitt into a molten sea of lava.
Sandecker could have stopped them. But he hadn't built what was thought of by many as the finest, most productive, and budget efficient agency in the government without taking his fair share of risky gambles. His fondness for marching out of step with official Washington made him the object of respect as well as envy. The other directors of national bureaus would never consider hands-on control of a hazardous project in the field that might run the risk of censure from Congress and force resignation by presidential order. Sandecker's only regret was that this was one adventure he couldn't lead himself.
He paused after carrying a load of dive gear from the old Chevy down the tubular bore and looked at Peter Duncan, who sat beside the sinkhole, busily overlaying a transparency of a topographical map onto a hydrographic survey of known underground water systems.
The two charts were enlarged to the same scale, enabling Duncan to trace the approximate course of the subterranean river. Around him, the others were setting out the dive gear and float equipment. "As the crow flies," Duncan said to no one specifically, "the distance between Satan's Sinkhole and Cerro el Capirote works out to roughly thirty kilometers."
Sandecker looked down into the water of the sinkhole. "What quirk of nature formed the river channel?"
"About sixty million years ago," answered Duncan, "a shift in the earth caused a fault in the limestone, allowing water to seep in and carve out a series of connecting caverns."
The admiral turned to Pitt. "How long do you think it will take you to get there?"
"Running with a current of nine knots," said Pitt, "we should make the treasure cavern in three hours."
Duncan looked doubtful. "I've never seen a river that didn't meander. If I were you I'd add another two hours to my estimated time of arrival."
"The Wallowing Windbag will make up the time," Giordino said confidently as he stripped off his clothes.
"Only if you have clear sailing all the way. You're entering the unknown. There is no second-guessing the difficulties you might encounter. Submerged passages extending ten kilometers or more, cascades that fall the height of a ten-story building, or unnavigable rapids through rocks. White-water rafters have a saying-- if there is a rock, you'll strike it. If there is an eddy, you'll get caught in it."
"Anything else?" Giordino grinned, unshaken by Duncan's dire forecast. "Like vampires or gluttonous monsters with six jaws of barracuda teeth lurking in the dark to have us for lunch?"
"I'm only trying to prepare you for the unexpected," Duncan said. "The best theory I can offer that might give you a small sense of security is that I believe the main section of the river system flows through a fault in the earth. If I'm right, the channel will travel in an erratic path but with a reasonably level depth."
Pitt patted him on the shoulder. "We understand and we're grateful. But at this stage, all Al and I can do is hope for the best, expect the worst, and settle for anything in between."
"When you swam out of the sinkhole's feeder stream into the river," Sandecker asked Duncan, "was there an air pocket?"
"Yes, the rock ceiling rose a good ten meters above the surface of the river."
"How far did it extend?"
"We were hanging onto the fixed guideline for dear life against the current and only got a brief look. A quick sweep of my light failed to reveal the end of the gallery."
"With luck, they'll have an air passage the entire trip."
"A lot of luck," said Duncan skeptically, his eyes still drawn to the chart overlays. "As underground rivers go, this one is enormous. In sheer length, it must be the longest unexplored subterranean water course through a field of karst."
Giordino hesitated in strapping on a small console containing pressure gauges, a compass, and a depth meter to his arm. "What do you mean by karst?"
"Karst is the term for a limestone belt that is penetrated by a system of streams, passages, and caverns."
"It makes one wonder how many other unknown rivers are flowing under the earth," said Pitt.
"Leigh Hunt and his river canyon of gold, another source of jokes by California and Nevada state hydrologists, now bear heavy investigation," admitted Duncan. "Because of what you discovered here, I'll guarantee that closed minds will take a second look."
