When he was well within, he began to investigate, and he recalled now that he had heard a great deal of this cave. It was very large, supposedly, but almost unexplored. Tradition ran that the Spaniards, in the long-past days of their occupation, had had a big silver mine in there, worked by padres who had taught the timid Indians to believe that it was haunted, that they might not take it for themselves, nor yet guide others to it. And, too, it had been the refuge and hiding-place of Billy the Kid for years. It was said that since then a corporal and three men had gone in once, and that a search party had found their gnawed skeletons by the edge of the river that flowed there underground. Oddly enough, and thanks to the missionary fathers, it had never served as an Indian stronghold, though its advantages for such a use were manifest. Cairness sat himself down and tried to listen for the flow of the great black river yonder in the great black hollow. By dint of straining his ears he almost fancied that he did catch a sound. But at the same instant, there came a real and unmistakable one. He started a little, not quite sure, just at first, what manner of wild beast, or man, or genius of the cave might pounce out upon him. It was only some one standing at the mouth of the hole, however, a shadow against the shimmering sunlight. And it was a woman--it was Felipa. He sat quite still, clinching his teeth and clawing his fingers tensely. In the great crises of life, training and upbringing and education fall away, and a man is governed by two forces, his instincts and his surroundings. And Cairness's instincts were in entire accord with his surroundings; they were of the Stone Age, when men fought with the beasts of the wilderness in their cave homes, and had only the law of sheer strength. He leaned forward, holding his breath, and watched her. Had she seen his horse tied up above, and come here to find him--because he was here? She might have seen two dots of light fixed on her from the shadow, if she had looked that way. But she did not, and came unconcernedly down. She was sure-footed and agile, and she was daring, too. He himself had felt a qualm at coming here. But she did not appear to hesitate once. She came on, close by where he sat, and going to the dark passage peered in. Then she turned away and caught sight of him. He was accustomed to the gloom by now, but she was not. She could only see that there was some one in the shadow. It flashed through his mind that she would scream, but the next moment he knew that she would not. She drew herself up and grasped her loaded quirt more firmly. There are some natures to which flight from a thing feared is physically impossible. They must not only face danger, they must go up to it. It is a trait, like any other. Felipa took two steps toward him. He came out of the rock nook into the half light and spoke her own name.