By mid-day they had gained the summit, and found themselves in the heart of a huge desolation, hedged in by a chaos of peaks and pinnacles, the snows unbroken by twig or bush, untracked by living sign. Here and there the dark face of some white-cowled rock or cliff scowled at them, and although they were drenched with sweat and parched from thirst, nowhere was there the faintest tinkle of running water, while the dry powder under foot scratched their throats like iron filings when they turned to it for relief. All were jaded and silent, save Emerson, who urged them on incessantly. It was early in the afternoon when the Indian stopped and began testing the air; Balt also seemed suddenly to scent a change in the atmospheric conditions. "What's wrong now?" Emerson asked, gruffly. "Feels like wind," answered the big man, with a shake of his head. The native began to chatter excitedly, and as they stood there a chill draught fanned their cheeks. Glancing upward at the hillsides, they saw that the air was now thickened as if by smoke, and, dropping their eyes, they saw the fluff beneath their feet stir lazily. Little wisps of snow-vapor began to dance upon the ridges, whisking out of sight as suddenly as they appeared. They became conscious of a sudden fall in the temperature, and they knew that the cold of interstellar space dwelt in that ghostly breath which smote them. Before they were well aware of the ominous significance of these signs the storm was upon them, sweeping through the chute wherein they stood with rapidly increasing violence. The terrible, unseen hand of the Frozen North had unleashed its brood of furies, and the air rang with their hideous cries. It was Dante's third circle of hell let loose--Cerberus baying through his wide, threefold throat, and the voices of tormented souls shrilling through the infernal shades. It came from behind them, lifting the fur on the backs of the wolf-dogs and filling it with powder, pelting their hides with sharp particles until they refused to stand before it, and turned and crouched with flattened ears in the shelter of the sled. In an instant the wet faces of the men were dried and their steaming garments hardened to shells, while their blood began to move more sluggishly.