Blindly she rode into that stretch of the trail that lies in the channel of the creek between the sheer walls. But when, at the end of the hall-like passage, her horse would have followed the trail out of the cañon, she pulled him back. The pinto fretted and tried to turn once more toward home, but she forced him to leave the trail and go on up the creek.

For some time the little horse labored through the sand and gravel or picked his way, as a mountain horse will, around bowlders and over the rocks. So that when those first few drops of rain came pattering down, the girl was already a considerable distance up the cañon. Again Nugget protested, and again she forced him on.

She had reached a point beyond where the cañon turns back toward the south when the storm broke and the rain came swirling down the mountain in torrents. The fierce downpour, driven by the heavy gusts of wind, forced her to bend low in the saddle. On every side the dense gray curtain enveloped her. Her horse broke in open rebellion. Nugget knew, if his rider had forgotten, the grave danger of their position in the creek bed, and he proceeded to take such action as would at least insure their immediate safety.

There were a few preliminary bounds, then a scrambling rush with flying gravel and rolling rocks and tearing brush, with plunging leaps and straining heavy lifts, during which the girl rider could do little more than cling to the saddle. When her horse finally consented again to the control of the bit, and stood trembling, with heaving flanks, on the steep side of the mountain, Marta had lost all sense of direction. In the terrific downpour, she could not see a hundred yards. Wrapped in the gray folds of that wind-blown curtain, every detail of the landscape save the near-by bushes was obscured beyond recognition. No familiar peak or sky-line could be seen.

Suddenly Nugget threw up his head—his ears pointed inquiringly. The girl, too, looked and listened. Then above the hiss of the rain on the rocks and bushes, and the roar of the wind along the mountain slope, she heard the thunder of the coming flood. Nearer and louder came the sound until presently that rolling crest of the flood, freighted with crushing, grinding bowlders, swept past and the gray depths of the cañon below her horse’s feet were filled with the wild uproar.

Marta knew that to go back the way she had come was impossible. She realized dully that Nugget had saved both her life and his. It did not much matter, but she was glad that the little horse was not down there in the bed of the creek. They might as well go on somewhere, she thought; perhaps Nugget could find some place where he at least would be more comfortable.

Giving her horse the signal to start, she dropped the bridle rein on his neck, thus permitting him to choose his own course. With sure-footed care, the little horse picked his way along the mountain side, always climbing a little higher until finally they reached what the girl knew must be the top of a ridge or spur of the main range. Following this ridge, which led always upward but at an easy grade, the pinto moved with greater freedom. They came at last to a low gap through which Nugget went without a sign of hesitation, and again he was making his way along the steep side of the mountain.

It was nearly dark when the girl became aware that her horse was following a faint trail. She did not know when they had come into this trail. It was so faintly marked that it could scarcely be distinguished, if at all. But Nugget seemed perfectly content and confident, and because there was no reason for doing otherwise, and because she did not care, she let the horse go the way he had chosen.

The night came swiftly down. The gray curtain deepened to black. The girl did not even try to guess where she was except that she knew she must be somewhere on one of the mountain slopes that form the upper part of Cañada del Oro—the wildest and most remote section of the Santa Catalina range.

She was exhausted with the stress of her emotions and numb with her rain-soaked clothing in the cool air of the altitude to which they had climbed. As the light failed and the black wall of the night closed in about her, she swayed, half fainting, in her saddle. Nugget stopped and the girl slipped to the ground, clinging to the saddle for support. Peering into the gloom she could barely distinguish the mass of a mountain cedar a little farther on.