Finally one of the females raised up her forward body, and began moving it back and forth like an impatient cobra. The male closest to her —-it seemed to Simin the largest he had seen—-broke away and came forward, moving toward the dry canal where the intruder stood waiting.

Unlike the others it showed no outward fear. It advanced without hesitation, or thought, or much of anything except the blind mating aggression of its kind. It stopped only once, looking back at the female from the lip of the sunken path, then came forward with only one impulse in its mind. Kill him.

Simin had only a short time to plan his fight. As the creature drew nearer he opened his wings instinctively and strafed the air with his foreclaws. His wings! In all the time since finding the abyss he had forgotten them, first from the weak amnesia of near-death, then from simple disuse. With no more time to marvel he moved in a quick half-circle to avoid the lumbering bulk, then flitted up behind it onto the slanting edge of the rift. These short bursts of flight he repeated several times (the thought that he could fly to safety and forget this fight never occurred to him), searching for a weakness. Though filled with a sullen rage, he knew there could be no mistakes. Rising higher, he hovered briefly above his baffled foe, then swept down onto its back, and in three quick motions of jaws and foreclaw, tore off its head and left it to die.

Still full of bitter and unused anger he landed again on the plain closest to the female, clawing the rock as if clinging to a rope, as his blurring wings drummed threateningly. Then letting go he flew directly over her, and left the sorry massacre behind.

With this action his patience expired. Landing as the far side of the chamber grew shallow, he walked on through a curving length of tunnel for some miles, until confronted by a three-directional branching of the passageway. He followed the right-hand way first, and for a short time made good progress. But then it doubled back on him and finally ended, died, into a narrowing of stone through which he could not pass. Furious, he worked his way back to the starting point, taking this time the central shaft, leading downward. The result was the same, though it took him much longer to realize. Returning again to the meeting of ways was now difficult, since in his haste he had been forced to take and re-take several turns in a compact but puzzling labyrinth, that he found in the end took him nowhere.

Coming again after many hours to the branching of paths, he tried to rest both mind and body, conceding the inevitable. His anger here was useless. It had only robbed him of strength and precious time, and he was no closer to a resolution of his bitter quest than he had ever been. And also, a peculiar yellow fear, such as he had seldom experienced in his life, was beginning to grow in him. At first he blamed himself, raging. But walking through the twisted tunnels of the labyrinth he had realized, suddenly, that it was not his fear alone. His body was still not right, if wrong in a way that was hard to define, and there could be but one explanation for it. The mist, the growing light, was affecting his altered physiology. He searched within himself, bewildered, till Shannon's memory put a name to it. RADIATION. A force that should not affect an insect, but which worked on those parts of his body that were yet human.

He rested for a time, but his rest was brief. The feelings of unease continued to grow in him; they would not be contained. The source of what he sought—-he could now feel a faint throbbing in the stone around him—-was a danger in itself, repulsing, even as it called to him. He must find it quickly, then be gone. For he knew that his time in those depths was limited. He gathered what courage and presence of mind he could, then pushed on, entering the left-hand passage.

He summoned now all his underground instincts, honed by the long delvings of his life among the mai. In those days, a constant stream unbroken by sleep, he had endlessly searched out tunnels untraveled or long forgotten, returning ever and again to those that went deepest, learning the mazes, delving deeper still. Though what he sought there he could not have said.

The left-hand way was subtle, as he passed onward through the narrow stone, with many turnings and side passages. He held mostly to the main shaft, learning its direction, following it on its slow, steady course downward. Many times it narrowed, till he was ready to despair. But always through perseverance and careful backtracking, he was able to find a way through.

The narrowing and tight touching of the walls began to frighten him. By this, more than any other token, he knew that the growing fear inside him was not solely his own. Far back in the journey he had realized that in taking the quest he must know, in part, what it was to be human. Perhaps the spirit of Shannon still lived more strongly than he knew. And perhaps there were others as well. Often he had thought with human voice, human words, till now it was impossible to separate the two. He had known, and been, emotions that were not his own…..