The glade, the avenue of a dozen yards loading from it to the outside plain, and the plain itself, were all perfectly level, and covered with a smooth turf. Any object upon their surface would be easily perceptible at a distance. The grove was thickly stocked with underwood--principally the smaller species of "mezquite." There was also a network of vines and llianas that, stretching upward, twined around the limbs of the live-oaks--the latter forming the highest and largest timber of all. The underwood was impenetrable to the eye, though a hunter could have crept through it in pursuit of game. At night, however, even under moonlight, it appeared a dark and impassable thicket. On one side of the glade, where the ground was dry and sandy, there stood a small clump of _pitahaya_ cactus. There were not over a dozen plants in all, but two or three of them were large specimens, sending up their soft succulent limbs nearly as high as the live-oaks. Standing by themselves in massive columns, and so unlike the trees that surrounded them, they gave a peculiar character to the scene; and the eye, unaccustomed to these gigantic candelabra, would scarce have known to what kingdom of nature they belonged--so unlike were they to the ordinary forms of vegetation. Such were the features of the spot where the hunted outlaw sought shelter for the night. CHAPTER FIFTY EIGHT. Carlos spoke the truth, when he gave his dog the credit of having saved his life, or, at all events, his liberty, which in the end amounted to the same thing. But for the sagacious brute having preceded him, he would certainly have entered the cave, and as certainly would he have been captured. His cunning adversaries had taken every step necessary for securing him. They had hidden their horses far back in the cavern. They had placed themselves behind the jutting rocks--one on each side of the entrance-- so that the moment he should have shown himself they were prepared to spring upon him like a brace of tigers. Their dogs, too, were there to aid them--crouched by the side of their masters, and along with them, ready to seize upon the unsuspecting victim. It was a well-planned ambuscade, and so far well-executed. The secrecy with which the hunters had left the settlement, and made their roundabout journey--their adroit approach to the ravine--their patient behaviour in watching till Carlos had ridden out of the way, and their then taking possession of the cave, were all admirably executed manoeuvres.