Thus fortified in his outlawry, he began to look about him. He was on a thickly wooded terrace with a blank wall of “outcrop” on one side nearly as high as the pines which pressed close against it. He had never seen it before; it was two or three miles from the highroad and seemed to be a virgin wilderness. But on close examination he could see, with the eye of a boy bred in a mining district, that the wall of outcrop had not escaped the attention of the mining prospector. There were marks of his pick in some attractive quartz seams of the wall, and farther on, a more ambitious attempt, evidently by a party of miners, to begin a tunnel, shown in an abandoned excavation and the heap of debris before it. It had evidently been abandoned for some time, as ferns already forced their green fronds through the stones and gravel, and the yerba buena vine was beginning to mat the surface of the heap. But the boy's fancy was quickly taken by the traces of a singular accident, and one which had perhaps arrested the progress of the excavators. The roots of a large pine-tree growing close to the wall had been evidently loosened by the excavators, and the tree had fallen, with one of its largest roots still in the opening the miners had made, and apparently blocking the entrance. The large tree lay, as it fell--midway across another but much smaller outcrop of rock which stood sharply about fifteen feet above the level of the terrace--with its gaunt, dead limbs in the air at a low angle. To Johnny's boyish fancy it seemed so easily balanced on the rock that but for its imprisoned root it would have made a capital see-saw. This he felt must be looked to hereafter. But here his attention was arrested by something more alarming. His quick ear, attuned like an animal's to all woodland sounds, detected the crackling of underwood in the distance. His equally sharp eye saw the figures of two men approaching. But as he recognized the features of one of them he drew back with a beating heart, a hushed breath, and hurriedly hid himself in the shadow. For he had seen that figure once before--flying before the sheriff and an armed posse--and had never forgotten it! It was the figure of Spanish Pete, a notorious desperado and sluice robber! Finding he had been unobserved, the boy took courage, and his small faculties became actively alive. The two men came on together cautiously, and at a little distance the second man, whom Johnny did not know, parted from his companion and began to loiter up and down, looking around as if acting as a sentinel for the desperado, who advanced directly to the fallen tree. Suddenly the sentinel uttered an exclamation, and Spanish Pete paused. The sentinel was examining the ground near the heap of debris. “What's up?” growled the desperado. “Foot tracks! Weren't here before. And fresh ones, too.” Johnny's heart sank. It was where he had just passed. Spanish Pete hurriedly joined his companion.