Only a few in the valley could boast of going beyond the top row of defrosters, fewer yet of even going within looking distance of the force fence. Beyond it, tradition said, lived great beasts that could eat a man with one bite. While the ridges that bounded the valley on three sides, to the east, west and north, were the edges of the world, from which one dropped off into bottomless space. To the south, where forest enclosed the mouth of the valley, tradition was vague, but the edge must be off there somewhere. It had taken Henry all summer to build up his determination. But now, up was the only direction it was safe to go. "If you're not afraid, I'm not either," Theta said. "Let's go." Carrying the basket with its remaining supply of fruit between them, they started up the slope. It was only a short distance to the top defrosters. These only went into action at blossom time for the apples and other highland fruits. From there to the force fence was a steep climb through rocks and brush. Their pace grew slower as they approached the fence. Their eyes scanned the rocks and scant brush for signs of the great beasts, but they saw none. Higher yet, about a quarter of a mile, was the top of the ridge. The edge of the earth. Theta pressed against him. "I'm scared," she murmured. Henry's face became set. "We said we were going," he said curtly. "You can stay if you wish." He selected rocks for both hands. The force fence only gave them a strong tingling sensation. The plast sandals insulated them somewhat. The slope became steeper, but there was no indication of any great beasts. Too excited to stop and rest, although they were breathing heavily, they pressed onward. Would it be night down there, over the edge of the world? Stars shining? Would it be daylight and clouds? The top of the ridge was a hundred feet away ... ten. Henry flung himself on the ground so if he became dizzy he would not lose his balance and fall. Theta did the same. Side by side, they crept the remaining distance. What they saw made them stare in open-mouthed amazement. * * * * * Before them was another ridge running out from the northern range. It was pretty much like the one they were on. Between it and them was another valley. Defrost towers rose from among the trees. Over the top of the opposite ridge, they could see still another. The northern mountains were lost in the blue distance. The shock to both was unnerving. Steeled to look out into Limbo, they found a valley much like their own. Together they turned and looked back into what could be seen of their own valley.