The two hunters trudged homeward late in the afternoon, with a deer slung from a pole they carried on their shoulders. Their breath hung visibly in the air as they walked along, for the frost had come and any day now, they knew, there would be snow.

"I'm worried about Wes," said Cooper, breathing heavily. "He's taking this too hard. We got to keep an eye on him."

"Let's take a rest," panted Hudson.

They halted and lowered the deer to the ground.

"He blames himself too much," said Cooper. He wiped his sweaty forehead. "There isn't any need to. All of us walked into this with our eyes wide open."

"He's kidding himself and he knows it, but it gives him something to go on. As long as he can keep busy with all his puttering around, he'll be all right."

"He isn't going to repair the time unit, Chuck."

"I know he isn't. And he knows it, too. He hasn't got the tools or the materials. Back in the workshop, he might have a chance, but here he hasn't."

"It's rough on him."

"It's rough on all of us."

"Yes, but we didn't get a brainstorm that marooned two old friends in this tail end of nowhere. And we can't make him swallow it when we say that it's okay, we don't mind at all."

"That's a lot to swallow, Johnny."

"What's going to happen to us, Chuck?"

"We've got ourselves a place to live and there's lots to eat. Save our ammo for the big game—a lot of eating for each bullet—and trap the smaller animals."

"I'm wondering what will happen when the flour and all the other stuff is gone. We don't have too much of it because we always figured we could bring in more."

"We'll live on meat," said Hudson. "We got bison by the million. The plains Indians lived on them alone. And in the spring, we'll find roots and in the summer berries. And in the fall, we'll harvest a half-dozen kinds of nuts."

"Some day our ammo will be gone, no matter how careful we are with it."

"Bows and arrows. Slingshots. Spears."

"There's a lot of beasts here I wouldn't want to stand up to with nothing but a spear."

"We won't stand up to them. We'll duck when we can and run when we can't duck. Without our guns, we're no lords of creation—not in this place. If we're going to live, we'll have to recognize that fact."

"And if one of us gets sick or breaks a leg or—"

"We'll do the best we can. Nobody lives forever."

But they were talking around the thing that really bothered them, Hudson told himself—each of them afraid to speak the thought aloud.

They'd live, all right, so far as food, shelter and clothing were concerned. And they'd live most of the time in plenty, for this was a fat and open-handed land and a man could make an easy living.

But the big problem—the one they were afraid to talk about—was their emptiness of purpose. To live, they had to find some meaning in a world without society.

A man cast away on a desert isle could always live for hope, but here there was no hope. A Robinson Crusoe was separated from his fellow-humans by, at the most, a few thousand miles. Here they were separated by a hundred and fifty thousand years.

Wes Adams was the lucky one so far. Even playing his thousand-to-one shot, he still held tightly to a purpose, feeble as it might be—the hope that he could repair the time machine.

We don't need to watch him now, thought Hudson. The time we'll have to watch is when he is forced to admit he can't fix the machine.

And both Hudson and Cooper had been kept sane enough, for there had been the cabin to be built and the winter's supply of wood to cut and the hunting to be done.

But then there would come a time when all the chores were finished and there was nothing left to do.

"You ready to go?" asked Cooper.

"Sure. All rested now," said Hudson.

They hoisted the pole to their shoulders and started off again.

Hudson had lain awake nights thinking of it and all the thoughts had been dead ends.

One could write a natural history of the Pleistocene, complete with photographs and sketches, and it would be a pointless thing to do, because no future scientist would ever have a chance to read it.

Or they might labor to build a memorial, a vast pyramid, perhaps, which would carry a message forward across fifteen hundred centuries, snatching with bare hands at a semblance of immortality. But if they did, they would be working against the sure and certain knowledge that it all would come to naught, for they knew in advance that no such pyramid existed in historic time.

Or they might set out to seek contemporary Man, hiking across four thousand miles of wilderness to Bering Strait and over into Asia. And having found contemporary Man cowering in his caves, they might be able to help him immeasurably along the road to his great inheritance. Except that they'd never make it and even if they did, contemporary Man undoubtedly would find some way to do them in and might eat them in the bargain.

They came out of the woods and there was the cabin, just a hundred yards away. It crouched against the hillside above the spring, with the sweep of grassland billowing beyond it to the slate-gray skyline. A trickle of smoke came up from the chimney and they saw the door was open.

"Wes oughtn't to leave it open that way," said Cooper. "No telling when a bear might decide to come visiting."

"Hey, Wes!" yelled Hudson.

But there was no sign of him.

Inside the cabin, a white sheet of paper lay on the table top. Hudson snatched it up and read it, with Cooper at his shoulder.

Dear guys—I don't want to get your hopes up again and have you disappointed. But I think I may have found the trouble. I'm going to try it out. If it doesn't work, I'll come back and burn this note and never say a word. But if you find the note, you'll know it worked and I'll be back to get you. Wes.

Hudson crumpled the note in his hand. "The crazy fool!"

"He's gone off his rocker," Cooper said. "He just thought...."

The same thought struck them both and they bolted for the door. At the corner of the cabin, they skidded to a halt and stood there, staring at the ridge above them.

The pyramid of rocks they'd built two months ago was gone!