After all, she had to go lower for her favorite blooms. On Del Oro she found columbines, but in no great profusion. She wandered from the stream, leading Blacky by the bridle. On a hillside just above an aspen grove the girl came upon scattered clumps of them. Tying the pony loosely to a clump of bushes, she began to gather the delicate blue wild flowers. The blossoms enticed her feet to the edge of a prospect hole long since abandoned. A clump of them grew from the side of the pit about a foot below the level of the ground. Beulah reached for them, and at the same moment the ground caved beneath her feet. She clutched at a bush in vain as she plunged down. Jarred by the fall, Beulah lay for a minute in a huddle at the bottom of the pit. She was not quite sure that no bones were broken. Before she had time to make certain, a sound brought her rigidly to her feet. It was a light loose sound like the shaking of dried peas in their pods. No dweller of the outdoors Southwest could have failed to recognize it, and none but would have been startled by it. The girl whipped her revolver from its scabbard and stood pressed against the rock wall while her eyes searched swiftly the prison into which she had fallen. Again came that light swift rattle with its sinister menace. The enemy lay coiled across the pit from her, head and neck raised, tongue vibrating. Beulah fired--once--twice--a third time. It was enough. The rattlesnake ceased writhing. The first thing she did was to examine every inch of her prison to make sure there were no more rattlers. Satisfied as to this, she leaned faintly against the wall. The experience had been a shock even to her sound young nerves. Chapter XXIII In the Pit Beulah shut her eyes to steady herself. From the impact of her fall she was still shaken. Moreover, though she had shot many a rattlesnake, this was the first time she had ever been flung head first into the den of one. It would have been easy to faint, but she denied herself the luxury of it and resolutely fought back the swimming lightness in her head. Presently she began to take stock of her situation. The prospect hole was circular in form, about ten feet across and nine feet deep. The walls were of rock and smooth clay. Whatever timbering had been left by the prospector was rotted beyond use. It crumbled at the weight of her foot. How was she to get out? Of course, she would find some way, she told herself. But how? Blacky was tied to a bush not fifty yards away, and fastened to the saddle horn was the rope that would have solved her problem quickly enough. If she had it here--But it might as well be at Cheyenne for all the good it would do her now.