Clad in rough, unsightly denim, and leading a burro which carried a very considerable store of provisions, they clambered up the jagged sides of Ahualtapec; they tore their way through thickets and fell upon cacti. "We're lost," panted Dolores, finally, as she pulled the many thorns from her clothing. "Elsa, we're lost." They had stopped, at about noon on the tenth day of their trip, to rest, and again to consult their maps. Elsa stood upon a ledge and looked across to where, between two lofty mountains, rising to the south of Ahualtapec, a smaller rock mass showed itself, like a much overgrown hill-the shell of a long extinct volcano, and a very counterpart of Ahualtapec. "Dolores," she pointed straight before her, "do you remember? A stone in which, when viewed from a distance, can be seen a resemblance to the cross of Tlaloc?" "Oh, dear," complained Dolores, dejectedly, "and all this time wasted!" "Now, Dolores!" small Elsa turned about determinedly, "you ought to shout for joy, for that certainly must be it. The rocks are bare around that spot, and you can see it plainly from here. It's on a ledge, too, just like the one we're on. We will start this very minute, Dolores." Delaying long enough only for Elsa, who had a fine sense of location, to impress upon her mind the position of the cross, they began once more the tedious scrambling, tearing, tumbling down slopes and up slopes, across streams and through, streams; but they did not lose themselves again. "Do you suppose," Dolores anxiously asked, "that we can ever move it?" as she saw how the ages had packed, and hardened the damp soil about the base of the boulder. "We must." Elsa was resolved not to be defeated. "We absolutely must," she reiterated. "How?" demanded Dolores. Elsa's reply was to unstrap a bag from the burro's back, to take from it two trowels, and silently to offer one to Dolores. No explanation was necessary. For five days the girls scraped and dug away the hardened soil from the lower part of the cross-shaped stone, until at last the block began to tremble as though about to fall. "Dolores! Dolores! It's top heavy, bless it!" Elsa was enthusiastically, insanely happy. The fact that the stone was top-heavy made it possible for the girls, by dint of much tugging, heaving, and pushing, to roll it over the ledge, and to send it bumping down the mountainside. A narrow passage, wide enough to admit only one at a time, was thus opened. Pine torches were lit. Even Dolores was excited. They squeezed into the entrance, Elsa first. They rushed through the short tunnel, until, at the end, Elsa stumbled and sank to her knees. "Oh, my! Dolores, just look!" she was holding her torch down to see what had caused her fall. "It's it," she remarked, disregarding rhetoric, while she pointed to a small turquoise-studded image of Tlaloc, the Neptune of the Aztecs.