They watched the browsing beasts in silence. Nobody volunteered any ideas. It appeared that this particular problem was not yet covered by any rule on or off the book.
“What we need is a mine field—like the one planted around Headquarters,” Ross said at last.
“Mine field?” repeated the man Kelgarries had called Wilson. Then he said again, “Mine field!”
“Got something?” demanded the major.
“Not a mine field,” Wilson corrected. “We could fix it for those brutes to blow themselves up, all right, but they’d take the ship with them. However, a sonic barrier now—”
“Run it around the ship outside your work field—yes!” The major was eager again. “Would it take long to get it in?”
“We’d have to bring a lot of equipment through. Say a day—maybe more. But it is the only thing I can think of now which might work.”
“All right. You’ll get all the material you need—on the double!” promised Kelgarries.
Wilson chuckled. “Just like that, eh? No howls about expense? Remember, I’m not going to sign any orders I have to defend with my lifeblood about two years from now before some half-baked investigating committee.”
“If we pull this off,” Kelgarries returned with convincing force, “we’ll never have to defend anything before anyone! Man—you get that ship through intact and our whole project will have paid for itself from the day it was nothing but a few wishful sentences on the back of an old envelope. This is it—the big pay-off!”
That was the beginning of a hectic period in Travis’ life which he was never able to sort out neatly in his head afterward. With Ashe and Ross he patrolled a wide area of hill and valley, keeping watch upon the camps of the wandering hunters, marking down the drifting herds of animals. For two days men shuttled back and forth and then erected a second time transfer within the valley of the smaller ship.
Wilson’s sonic barrier—an invisible yet nerve-shattering wall of high-frequency impulses—was in place around the ship. And while its signals did not affect human ears, the tension it produced did reach any man who strayed into its influence. The mammoth family withdrew into the small woodland from which they had come. The men working on the globe did not know whether that retreat was the result of the vibrations or not—but at least the beasts were gone.
Meanwhile more sonic broadcasters were set up on every path in and out of the valley, sealing it from invasion. Kelgarries and his superiors were throwing every resource of the project into this one job.
About the ship arose a framework of bars as fast as the men could fit one to another. Travis, watching the careful deliberation of the fitting, understood that delicate and demanding work was in progress. He learned from overheard comments that a new type of time transfer was in the process of being assembled here. One so large had never been attempted before. If the job was successful, the globe would be carried intact through to his own era for detailed study.
In the meantime another small crew of experts explored the ship, taking care not to activate any of its machines, and also made a detailed study of the remains of the crew. Medical men did what they could to discover the cause for the mass death of the space men. And their final verdict was a sudden attack of disease or food poisoning, for there were no wounds.
Three days—four—Travis, weary to his very bones, dragged back from a scouting trip southward. He hunched down by the fire in the camp the three field men kept on the heights above the crucial valley. A metallic taste in the air rasped throat and lungs when he breathed deeply. For the past two days volcanic activity in the north had intensified. During the previous night they had all been awakened by a display—luckily miles away—in which half a mountain must have blown skyward. Twice torrents of rain had hit, but it was warm rain and the sultriness of the air made conditions now almost tropical. He would be very glad when that fretwork of bars was in place and they could leave this muggy hotbox.
“See anything?” Ross Murdock tossed aside the hide blanket he had pulled about head and shoulders. He coughed raspingly as one of the sulphur-tinged breezes curled about them.
“Migration—I think,” Travis qualified his report. “The big bison herd is already well south and the hunters are following it.”
“Don’t like the fireworks, I suppose.” Ross nodded to the north. “And I don’t blame them. There’s a forest burning up there today.”
“Seen anything more of the mammoths?”
“Not around here, I was northeast anyway.”
“How long before they’ll be through down there?” Travis went to look down at the ship. There was a murky haze gathering about the valley and it was spoiling the clearness of the view. But men were still aloft on the scaffolding of rods—hurrying to the final capping of the skeleton enclosure around the sphere.
“Ask one of the brains. The other crew—the medics—finished their poking this afternoon. They went through transfer an hour ago. I’d say tomorrow they’ll be ready to throw the switch on that gadget. About time. I have a feeling about this place . . .”
“Maybe rightly.” Ashe loomed out of the growing murk. “There’s trouble popping to the north.” He coughed, and Travis suddenly noted that the mat of wig was missing from the older man’s head. He saw that there was a long red burn mark down Ashe’s shoulder, crossing the white seam of an earlier scar. Ross, seeing it too, jumped to his feet and turned Ashe toward the light of the fire to inspect that burn closer.
“What did you do—try to play boy on the burning deck?” His voice held an undernote of concern.
“I miscalculated how fast a stand of green timber can burn—when conditions are right. The top of a mountain did blow off last night, and it may have an encore soon. We’re moving down nearer to the transfer. And we may have visitors—”
“Hunters? I saw them moving south—”
Ashe shook his head in answer to Travis.
“No, but we may have been too clever about rigging that sonic screen. Those mammoths have been holed up in a small sub-valley to the north. If the hell I’m expecting now breaks loose, sonics won’t hold them back, but breaking through such a barrier will make them really wild. They might just charge straight down through here. Kelgarries will have to try his big transfer if that happens.”
The scouts reached the floor of the valley in time to see the technicians dropping from the grillwork and hurrying to the time transfer. But they had not gotten to the grill when the world went mad. With flame, noise and thunder from the north, a great surge of fire leapt up to scorch the underside of lowering clouds. Travis was thrown off his feet as the ground crawled sickeningly. He saw the grid sway around the globe, heard cries and shouts.
“—quake!” The volcanic outburst was being matched by earthquake. Travis stared up at the grid fascinated, expecting every moment to see the rods fly apart and come crashing down on the dome of the ship. But although the framework swayed, it did not fall.
In the thickening murk Kelgarries drove his men to the personnel transfer. Travis knew that he should join that line, but he was simply too amazed by the scene to stir. The smoke grew denser. Out of it arose a shout in a familiar voice. Getting to his feet, he ran to answer that plea for help.
Ashe lay on the ground. Ross was bending over him, trying to get him to his feet. As Travis blundered up, his spears thrown away, the smoke closed in and provoked strangled coughing. Travis’ sense of direction faltered. Which way was the time transfer? Light ashes drifting through the air blurred air and ground alike. It was like being caught in a snowstorm.