They stared long and hopelessly at the shaft that reached, vertical and sheer, high, high over their heads. And a curse like that of Tantalus was theirs. For, far at the top, slanting in through some off-shooting passage, there was sunlight. It was unmistakable in its clear glare, beautiful, glorious--and unattainable. There were roughnesses in the wall, footholds, handholds here and there. "It might be ... it might be...." Jerry tried to believe, but the ache in his arm made the thought hopeless and incomplete. He turned to his companion. "I believe you can do it," he said steadily. * * * * * Winslow's dark eyes were gleaming in the dimness that surrounded. "Possibly," he replied, and eyed the ascent with an appraising stare. "Even probably. But you know damn well, Foster, that I'm not going to try." "Don't be an ass." Jerry's tone was harsh, but the tall man must have known what emotions lay underneath. "We'll play it out together," he said. Jerry was silent as he reached in the darkness for Winslow's hand. "Of course I knew you were that sort," he said. He waited a moment, then added: "But you're going, old man, you're going. Don't you see it's our only hope?" Winslow shook his head emphatically. Jerry could see him in the dim reflection from that radiance above. "Nothing doing," the calm voice assured him. "Don't bother to think up more reasons why I should desert." "Listen!" Jerry gripped roughly at the other's shoulder. "Listen to reason. "If you go and I go back there, what will happen? With Marahna gone we are helpless, and we will be helpless to save her. The long night is ahead. How can we live? Where can we live? We will be wiped out as sure as we're alive this minute. "If you go--and if you make it to the ship--there's a chance. Alone, I may manage to stick it out." He knew he was lying, knew that the other knew it too, but he went on determinedly. "You can wait for me up above. My arm will be well--" Winslow stopped him with a gesture. "There's a chance," the older man was muttering, "there's a chance...." He swung quickly toward Foster, to grab hard at the good right hand. "I'm going," he stated. "I'm on my way. I won't say good-by; what's the use--I'll be back soon!" He released his hold on Jerry to leap high in the air for a ledge of projecting rock. He caught it and hung. His foot found a toehold and he drew himself up to where another rough outcrop gave grip for his hand. Jerry Foster stood frozen to throbbing stillness. Words were strangling in his throat, an impulse, almost irresistible, to call. If there were only a rope.... He was still silent when the tiny figure of his companion and friend was lost in the heights, where it vanished into that tunnel from which came the light. He turned blindly, to stumble back into the dark. * * * * *