The canyon narrowed as it deepened; the jutting walls leaned together, shutting out the light; the sky above was now a ribbon of blue, only to be seen when Hare threw back his head and stared straight up.
“It'll be easier climbing up, Silvermane,” he panted--“if we ever get the chance.”
The sand and gravel and shale had disappeared; all was bare clean-washed rock. In many places the brook failed as a trail, for it leaped down in white sheets over mossy cliffs. Hare faced these walls in despair. But Wolf led on over the ledges and Silvermane followed, nothing daunted. At last Hare shrank back from a hole which defied him utterly. Even Wolf hesitated. The canyon was barely twenty feet wide; the floor ended in a precipice; the stream leaped out and fell into a dark cleft from which no sound arose. On the right there was a shelf of rock; it was scarce half a foot broad at the narrowest and then apparently vanished altogether. Hare stared helplessly up at the slanting shut-in walls.
While he hesitated Wolf pattered out upon the ledge and Silvermane stamped restlessly. With a desperate fear of losing his beloved horse Hare let go the bridle and stepped upon the ledge. He walked rapidly, for a slow step meant uncertainty and a false one meant death. He heard the sharp ring of Silvermane's shoes, and he listened in agonized suspense for the slip, the snort, the crash that he feared must come. But it did not come. Seeing nothing except the narrow ledge, yet feeling the blue abyss beneath him, he bent all his mind to his task, and finally walked out into lighter space upon level rock. To his infinite relief Silvermane appeared rounding a corner out of the dark passage, and was soon beside him.
The canyon widened; there was a clear demarcation where the red walls gave place to yellow; the brook showed no outlet from its subterranean channel. Sheer exhaustion made Hare almost forget his mission; the strength of his resolve had gone into mechanical toil; he kept on, conscious only of the smart of bruised hands and feet and the ache of laboring lungs.
Time went on and the sun hung in the midst of the broadening belt of blue sky. A long slant of yellow slope led down to a sage-covered level, which Hare crossed, pleased to see blooming cacti and wondering at their slender lofty green stems shining with gold flowers. He descended into a ravine which became precipitous. Here he made only slow advance. At the bottom he found himself in a wonderful lane with an almost level floor; here flowed a shallow stream bordered by green willows. Wolf took the direction of the flowing water. Hare's thoughts were all of Mescal, and his hopes began to mount, his heart to beat high.