He reached a shoulder below Bruce. "Off rappel!" he called, and recovered his line by pulling it through the ring.
Bruce rigged a rappel seat and joined him. The pitches became steeper; thereafter Sam sent Bruce down first, while anchoring him above. They came to a last high sheer drop. Bruce peered over. "Looks like here we roost."
"Maybe." Sam bent all four lines together and measured it. Ten feet of line reached the rubble at the base.
Bruce said, "It'll reach, but we have to leave the lines behind us."
Sam scowled. "Glass lines cost money; they're from Earth."
"Beats staying here."
Sam searched the cliff face, then drove a piton. "I'll lower you. When you're halfway, drive two pitons and hang the strap from one. That'll give me a changeover."
"I'm against it," protested Bruce.
"If we lost our lines," Sam argued, "we'll never hear the last of it. Go ahead."
"I still don't like it."
"Who's in charge?"
Bruce shrugged, snapped on the line and started down.
Sam stopped him presently. "Halfway. Pick me a nest."
Bruce walked the face to the right, but found only smooth wall. He worked back and located a crack. "Here's a crack," he reported, "but just one. I shouldn't drive two pitons in one crack."
"Spread 'em apart," Sam directed. "It's good rock."
Reluctantly, Bruce complied. The spikes went in easily but he wished he could hear the firm ring that meant a piton was biting properly. Finished, he hung the strap. "Lower away!"
In a couple of minutes he was down and unsnapped the line. "Off belay!" He hurried down the loose rock at the base. When he reached the edge of it he called, "Sam! This plain is soft stuff."
"Okay," Sam acknowledged. "Stand clear." Bruce moved along the cliff about fifty feet and stopped to bind on skis. Then he shuffled out onto the plain, kick-turned, and looked back. Sam had reached the pitons. He hung, one foot in the strap, the bight in his elbow, and recovered his line. He passed his line through the second piton ring, settled in rappel, and hooked the strap from piton to piton as an anchor. He started down.
Halfway down the remaining two hundred feet he stopped. "What's the matter?" called Bruce.
"It's reached a shackle," said Sam, "and the pesky thing won't feed through the ring. I'll free it." He raised himself a foot, then suddenly let what he had gained slip through the ring above.
To Bruce's amazement Sam leaned out at an impossible angle. He heard Sam cry "Rock!" before he understood what had happened—the piton had failed.
Sam fell about four feet, then the other piton, connected by the strap, stopped him. He caught himself, feet spread. But the warning cry had not been pointless; Bruce saw a rock settling straight for Sam's helmet. Bruce repeated the shout.
Sam looked up, then jumped straight out from the cliff. The rock passed between him and the wall; Bruce could not tell if it had struck him. Sam swung in, his feet caught the cliff—and again he leaned out crazily. The second piton had let go.
Sam again shouted, "Rock!" even as he kicked himself away from the cliff.
Bruce watched him, turning slowly over and over and gathering momentum. It seemed to take Sam forever to fall.
Then he struck.
* * *
Bruce fouled his skis and had to pick himself up. He forced himself to be careful and glided toward the spot.
Sam's frantic shove had saved him from crashing his helmet into rock. He lay buried in the loose debris, one leg sticking up ridiculously. Bruce felt an hysterical desire to laugh.
Sam did not stir when Bruce tugged at him. Bruce's skis got in his way; finally he stood astraddle, hauled Sam out. The boy's eyes were closed, his features slack, but the suit still had pressure. "Sam," shouted Bruce, "can you hear me?"
Sam's blood-oxygen reading was dangerously in the red; Bruce opened his intake valve wider—but the reading failed to improve. He wanted to turn Sam face down, but he had no way of straightening Sam's helmeted head, nor would he then be able to watch the blood-oxygen indicator unless he took time to remove the belt. He decided to try artificial respiration with the patient face up. He kicked off skis and belt.
The pressure in the suit got in his way, nor could he fit his hands satisfactorily to Sam's ribs. But he kept at it—swing! and one, and two and up! and one, and two and swing!
The needle began to move. When it was well into the white Bruce paused.
It stayed in the white.
Sam's lips moved but no sound came. Bruce touched helmets. "What is it, Sam?"
Faintly he heard, "Look out! Rock!"
Bruce considered what to do next.
There was little he could do until he got Sam into a pressurized room. The idea, he decided, was to get help—fast!
Send up a smoke signal? Fire a gun three times? Snap out of it, Bruce! You're on the Moon now. He wished that someone would happen along in a desert car.
He would have to try radio. He wasn't hopeful, as they had heard nothing even from the cliff. Still, he must try—
He glanced at Sam's blood-oxygen reading, then climbed the rubble, extended his antenna and tried. "M'aidez!" he called. "Help! Does anybody hear me?" He tried again.
And again.
When he saw Sam move he hurried back. Sam was sitting up and feeling his left knee. Bruce touched helmets. "Sam, are you all right?"
"Huh? This leg won't work right."
"Is it broken?"
"How do I know? Turn on your radio."
"It is on. Yours is busted."
"Huh? How'd that happen?"
"When you fell."
"Fell?"
Bruce pointed. "Don't you remember?"
Sam stared at the cliff. "Uh, I don't know. Say, this thing hurts like mischief. Where's the rest of the troop?"
Bruce said slowly, "We're out by ourselves, Sam. Remember?"
Sam frowned. "I guess so. Bruce, we've got to get out of here! Help me get my skis on."
"Do you think you can ski with that knee?"
"I've got to." Bruce lifted him to his feet, then bound a ski to the injured leg while Sam balanced on the other. But when Sam tried shifting his weight he collapsed—and fainted.
Bruce gave him air and noted that the blood-oxygen reading was still okay. He untangled the ski, straightened out Sam's legs, and waited. When Sam's eyes fluttered he touched helmets. "Sam, can you understand me?"
"Yeah. Sure."
"You can't stay on your feet. I'll carry you."
"No."
"What do you mean, 'No'?"
"No good. Rig a toboggan." He closed his eyes.
Bruce laid Sam's skis side by side. Two steel rods were clipped to the tail of each ski; he saw how they were meant to be used. Slide a rod through four ring studs, two on each ski; snap a catch—so! Fit the other rods. Remove bindings—the skis made a passable narrow toboggan.
He removed Sam's pack, switched his bottles around in front and told him to hold them. "I'm going to move you. Easy, now!" The space-suited form hung over the edges, but there was no help for it. He found he could thread a rope under the rods and lash his patient down. Sam's pack he tied on top.
He made a hitch by tying a line to the holes in the tips of the skis; there was a long piece left over. He said to Sam, "I'll tie this to my arm. If you want anything, just jerk."
"Okay."
"Here we go." Bruce put on his skis, brought the hitch up to his armpits and ducked his head through, forming a harness. He grasped his ski poles and set out to the south, parallel to the cliff.
The toboggan drag steadied him; he settled down to covering miles. Earth was shut off by the cliff; the Sun gave him no estimate of hour. There was nothing but blackness, stars, the blazing Sun, a burning desert underfoot, and the towering cliff—nothing but silence and the urgency to get back to base.
Something jerked his arm. It scared him before he accounted for it. He went back to the toboggan. "What is it, Sam?"
"I can't stand it. It's too hot." The boy's face was white and sweat-covered.
Bruce gave him a shot of air, then thought about it. There was an emergency shelter in Sam's pack, just a rolled-up awning with a collapsible frame. Fifteen minutes later he was ready to move. One awning support was tied upright to the sole of one of Sam's boots; the other Bruce had bent and wedged under Sam's shoulders. The contraption looked ready to fall apart but it held. "There! Are you okay?"
"I'm fine. Look, Bruce, I think my knee is all right now. Let me try it."
Bruce felt out the knee through the suit. It was twice the size of its mate; he could feel Sam wince. He touched helmets. "You're full of hop, chum. Relax." Bruce got back into harness.
Hours later, Bruce came across tracks. They swung in from northeast, turned and paralleled the hills. He stopped and told Sam.
"Say, Sam, how can I tell how old they are?"
"You can't. A track fifty years old looks as fresh as a new one."
"No point in following these?"
"No harm in it, provided they go in our direction."
"Roger." Bruce went back to towing. He called hopefully over the radio every few minutes and then listened. The tracks cheered him even though he knew how slim the chance was that they meant anything. The tracks swung out from the hills presently or, rather, the hills swung in, forming a bay. He took the shorter route as his predecessor had.
He should have seen what was coming. He knew that he should keep his eyes ahead, but the need to watch his instruments, the fact that he was leaning into harness, and the circumstance that he was following tracks combined to keep his head down. He had just glanced back at Sam when he felt his skis slipping out from under him.
Automatically he bent his knees and threw his skis into a "snowplow." He might have been able to stop had not the toboggan been scooting along behind. It plowed into him; boy, skis, and toboggan went down, tangled like jackstraws.
He struggled for footing, felt the sand slip under him. He had time to see that he had been caught—in daylight!—by that lunar equivalent of quicksand, a morning glory. Then the sifting dust closed over his helmet.
He felt himself slip, slide, fall, slide again, and come softly to rest.
* * *
Bruce tried to get his bearings. Part of his mind was busy with horror, shock, and bitter self blame for having failed Sam; another part seemed able to drive ahead with the business at hand. He did not seem hurt—and he was still breathing. He supposed that he was buried in a morning glory; he suspected that any movement would bury him deeper.
Nevertheless he had to locate Sam. He felt his way up to his neck, pushing the soft flakes aside. The toboggan hitch was still on him. He got both hands on it and heaved. It was frustrating work, like swimming in mud. Gradually he dragged the sled to him—or himself to the sled. Presently he felt his way down the load and located Sam's helmet. "Sam! Can you hear me?"
The reply was muffled. "Yeah, Bruce!"
"Are you okay?"
"Okay? Don't be silly! We're in a morning glory!"
"Yes, I know. Sam, I'm terribly sorry!"
"Well, don't cry about it. It can't be helped."
"I didn't mean to—"
"Stow it, can't you!" Sam's voice concealed panic with anger. "It doesn't matter. We're goners—don't you realize that?"
"Huh? No, we're not! Sam, I'll get you out—I swear I will."
Sam waited before replying. "Don't kid yourself, Bruce. Nobody ever gets out of a morning glory."
"Don't talk like that. We aren't dead yet."
"No, but we're going to be. I'm trying to get used to the idea." He paused. "Do me a favor, Bruce—get me loose from these confounded skis. I don't want to die tied down."
"Right away!" In total darkness, his hands in gloves, with only memory to guide him, and with the soft, flaky dust everywhere, unlashing the load was nearly impossible. He shifted position, then suddenly noticed something—his left arm was free of the dust.
He shifted and got his helmet free as well. The darkness persisted; he fumbled at his belt, managed to locate his flashlight.
He was lying partly out and mostly in a sloping mass of soft stuff. Close overhead was a rocky roof; many feet below the pile spilled over a floor of rock. Sideways the darkness swallowed up the beam.
He still clutched the toboggan; he hauled at it, trying to drag Sam out. Failing, he burrowed back in. "Hey, Sam! We're in a cave!"
"Huh?"
"Hang on. I'll get you out." Bruce cautiously thrashed around in an attempt to get his entire body outside the dust. It kept caving down on him. Worse, his skis anchored his feet. He kicked one loose, snaked his arm in, and dragged it out. It slid to the base of the pile. He repeated the process, then rolled and scrambled to the floor, still clinging to the hitch.
He set the light on the rock floor, and put the skis aside, then heaved mightily. Sam, toboggan, and load came sliding down, starting a small avalanche. Bruce touched helmets. "Look! We're getting somewhere!"
Sam did not answer. Bruce persisted, "Sam, did you hear me?"
"I heard you. Thanks for pulling me out. Now untie me, will you?"
"Hold the light." Bruce got busy. Shortly he was saying, "There you are. Now I'll stir around and find the way out."
"What makes you think there is a way out?"
"Huh? Don't talk like that. Who ever heard of a cave with no exit?"
Sam answered slowly, "He didn't find one."
"'He'?"
"Look." Sam shined the light past Bruce. On the rock a few feet away was a figure in an old-fashioned space suit.
Bruce took the light and cautiously approached the figure. The man was surely dead; his suit was limp. He lay at ease, hands folded across his middle, as if taking a nap. Bruce pointed the torch at the glass face plate. The face inside was lean and dark, skin clung to the bones; Bruce turned the light away.
He came back shortly to Sam. "He didn't make out so well," Bruce said soberly. "I found these papers in his pouch. We'll take them with us so we can let his folks know."
"You are an incurable optimist, aren't you? Well, all right." Sam took them. There were two letters, an old-style flat photograph of a little girl and a dog, and some other papers. One was a driver's license for the Commonwealth of Massachusetts, dated June 1995 and signed Abner Green.
Bruce stared. "1995! Gee whiz!"
"I wouldn't count on notifying his folks."
Bruce changed the subject. "He had one thing we can use. This." It was a coil of manila rope. "I'll hitch all the lines together, one end to your belt and one to mine. That'll give me five or six hundred feet. If you want me, just pull."
"Okay. Watch your step."
"I'll be careful. You'll be all right?"
"Sure. I've got him for company."
"Well . . . here goes."
One direction seemed as good as another. Bruce kept the line taut to keep from walking in a circle. The rock curved up presently and his flash showed that it curved back on itself, a dead end. He followed the wall to the left, picking his way, as the going was very rough. He found himself in a passage. It seemed to climb, but it narrowed. Three hundred feet and more out by the ropes, it narrowed so much that he was stopped.
Bruce switched off his light and waited for his eyes to adjust. He became aware of a curious sensation. It was panic.
He forced himself not to turn on the light until he was certain that no gleam lay ahead. Then thankfully he stumbled back into the main cavern.
Another series of chambers led steadily downward. He turned back at a black and bottomless hole.
The details varied but the answers did not: At the furthest reach of the lines, or at some impassable obstacle, he would wait in the dark—but no gleam of light ever showed. He went back to Sam after having covered, he estimated, about 180°.
Sam had crawled up to the heap of fallen dust. Bruce hurried to him. "Sam, are you all right?"
"Sure. I just moved to a
feather bed. That rock is terribly cold. What did you find?"
"Well, nothing yet," he admitted. He sat down in the flaky pile and leaned toward Sam. "I'll start again in a moment."
"How's your air supply?" asked Sam.
"Uh, I'll have to crack my reserve bottle soon. How's yours?"
"Mine is throttled to the limit. You're doing all the work; I can save my reserve bottle for you—I think."
Bruce frowned. He wanted to protest, but the gesture wouldn't make sense. They would have to finish up all even; naturally he was using much more air than was Sam.
One thing was sure—time was running out. Finally he said, "Look, Sam—there's no end of those caves and passages. I couldn't search them all with all the air in Luna City."
"I was afraid so."
"But we know there's a way out right above us."
"You mean in."
"I mean out. See here—this morning glory thing is built like an hour glass; there's an open cone on top, and this pile of sand down below. The stuff trickled down through a hole in the roof and piled up until it choked the hole."
"Where does that get you?"
"Well, if we dug the stuff away we could clear the hole."
"It would keep sifting down."
"No, it wouldn't, it would reach a point where there wasn't enough dust close by to sift down any further—there would still be a hole."
Sam considered it. "Maybe. But when you tried to climb up it would collapse back on you. That's the bad part about a morning glory, Bruce; you can't get a foothold."
"The dickens I can't! If I can't climb a slope on skis without collapsing it, when I've got my wits about me and am really trying, why, you can have my reserve air bottle."
Sam chuckled. "Don't be hasty. I might hold you to it. Anyhow," he added, "I can't climb it."
"Once I get my feet on the level, I'll pull you out like a cork, even if you're buried. Time's a-wastin'." Bruce got busy.
Using a ski as a shovel he nibbled at the giant pile. Every so often it would collapse down on him. It did not discourage him; Bruce knew that many yards of the stuff would have to fall and be moved back before the hole would show.