The camp was situated in a hollow among the ice-mountains that rose to a height of two or three thousand feet all around. Tommy had not dreamed how strongly the gale was blowing until he was over the top of them. Then he realized that he was facing a tougher proposition than he had calculated on. The storm struck the biplane with full force. A snowstorm was driving up rapidly, blackening the sky. The sun, which only appeared for a brief interval every day, was practically touching the horizon as it rose to make its minute arc in the sky. A star was visible through a rift in the clouds overhead, and the pale daylight in which they had started had already become twilight. Tommy was tempted to turn back, but it was only a hundred miles, and Jimmy Dodd would give him no peace if he did so. So he put the plane's nose resolutely into the wind, watching his speed indicator drop from a hundred miles per hour to eighty, sixty, forty--less. The storm was beating up furiously. Of a sudden the clouds broke into a deluge of whirling snow. In a moment the windshield was a frozen, opaque mass. Tommy opened it, and peered out into the biting air. He could see nothing.... The plane, caught in the fearful cross-currents that swirl about the southern roof of the world, was fluttering like a leaf in the wind. The altimeter was dropping dangerously. Tommy opened the throttle to the limit, zooming, and, like a spurred horse, the biplane shot forward and upward. She touched five thousand, six, seven--and that, for her, was ceiling under those conditions, for a sudden tremendous shock of wind, coming in a fierce cross-current, swung her round, tossed her to and fro in the enveloping white cloud. And Tommy knew that he had the fight of his life upon his hands. * * * * * The compasses, which required considerable daily adjusting to be of use so near to the pole, had now gone out of use altogether. The air speed indicator had apparently gone west, for it was oscillating between zero and twenty. The turn and bank indicator was performing a kind of tango round the dial. Even the eight-day clock had ceased to function, but that might have been due to the fact that Tommy had neglected to wind it. And the oil pressure gauge presented a still more startling sight, for a glance showed that either there was a leak or else the oil had frozen. Tommy looked around at Dodd and pointed downward. Dodd responded with a vicious forward wave of his hand. Tommy shook his head, and Dodd started forward along the cabin, apparently with the intention of committing assault and battery upon him. Instead, the archaeologist collapsed upon the floor as the plane spun completely around under the impact of a blast that was like a giant's slap.