They were not far now from the highest peak of the Cordilleras, but there was not the slightest trace of any beaten path. The entire region had been overturned by recent shocks of earthquake, and all they could do was to keep on climbing higher and higher. Paganel was rather disconcerted at finding no way out to the other side of the chain, and laid his account with having to undergo great fatigue before the topmost peaks of the Andes could be reached, for their mean height is between eleven and twelve thousand six hundred feet. Fortunately the weather was calm and the sky clear, in addition to the season being favorable, but in Winter, from May to October, such an ascent would have been impracticable. The intense cold quickly kills travelers, and those who even manage to hold out against it fall victims to the violence of the TEMPORALES, a sort of hurricane peculiar to those regions, which yearly fills the abysses of the Cordilleras with dead bodies.
They went on toiling steadily upward all night, hoisting themselves up to almost inaccessible plateaux, and leaping over broad, deep crevasses. They had no ropes, but arms linked in arms supplied the lack, and shoulders served for ladders. The strength of Mulrady and the dexterity of Wilson were taxed heavily now. These two brave Scots multiplied themselves, so to speak. Many a time, but for their devotion and courage the small band could not have gone on. Glenarvan never lost sight of young Robert, for his age and vivacity made him imprudent. Paganel was a true Frenchman in his impetuous ardor, and hurried furiously along. The Major, on the contrary, only went as quick as was necessary, neither more nor less, climbing without the least apparent exertion. Perhaps he hardly knew, indeed, that he was climbing at all, or perhaps he fancied he was descending.
The whole aspect of the region had now completely changed. Huge blocks of glittering ice, of a bluish tint on some of the declivities, stood up on all sides, reflecting the early light of morn. The ascent became very perilous. They were obliged to reconnoiter carefully before making a single step, on account of the crevasses. Wilson took the lead, and tried the ground with his feet. His companions followed exactly in his footprints, lowering their voices to a whisper, as the least sound would disturb the currents of air, and might cause the fall of the masses of snow suspended in the air seven or eight hundred feet above their heads.