Down they went, still down; half—two-thirds of the distance was done, then he looked again and saw the horror that lay before them. Already the bridge was narrow, barely the width of a small room; sixty yards further on it tapered to so fine a point that their stone would almost cover its breadth, and beneath it on either side yawned that unmeasured gulf wherein Nam was lost with the jewels. Nor was this all, for at its narrowest the ice band was broken away for a space of ten or twelve feet, to continue on the further side of the gap for a few yards at a somewhat lower level, and then run upwards at a steep incline to the breast of snow where Otter sat in safety.
On they whizzed, ice beneath them and before them, and ice in Leonard’s heart, for he was frozen with fear. His breath had left him because of the rush of their progress, but his senses remained painfully acute. Involuntarily he glanced over the edge of the stone, saw the sheer depths below him, and found himself wondering what was the law that kept their sledge upon this ribbon of ice, when it seemed so easy for it to whirl off into space.
Now the gap was immediately in front of them. “God help us!” he murmured, or rather thought, for there was no time for words, and they had left the road of ice and were flying through the air as though the stone which carried them were a living thing, that, seeing the peril, had gathered up its energies and sprung forward for its life.
What happened? Leonard never knew for certain, and Otter swore that his heart leaped from his bosom and stood in front of his eyes so that he could not see. Before they touched the further point of ice—while they were in the air, indeed—they, or rather Leonard, heard a hideous scream, and felt a jerk so violent that his hold of the stone was loosened, and it passed from beneath them. Then came a shock, less heavy than might have been expected, and lo! they were spinning onwards down the polished surface of the ice, while the stone which had borne them so far sped on in front like a horse that has thrown its rider.
Leonard felt the rubbing of the ice burn him like hot iron. He felt also that his ankle was freed from the hand that had held it, then for some minutes he knew no more, for his senses left him. When they returned, it was to hear the voice of Otter crying, “Lie still, lie still, Baas, do not stir for your life; I come.”
Instantly he was wide awake, and, moving his head ever so little, saw their situation. Then he wished that he had remained asleep, for it was this:
The impetus of their rush had carried them almost to the line where the ice stopped and the rock and snow began, within some fifteen feet of it, indeed. But those fifteen feet were of the smoothest ice and very sheer, so smooth and sheer that no man could hope to climb them. Below them the slope continued for about thirteen or fourteen yards, till it met the corresponding incline that led to the gap in the bridge.
On this surface of ice they were lying spread-eagled. For a moment Leonard wondered how it was that they did not slide back to the bottom of the slope, there to remain till they perished, for without ropes and proper implements no human being could scale it. Then he saw that a chance had befallen them, which in after-days he was wont to attribute to the direct intervention of Providence.
It will be remembered that when they started, Leonard had pushed the rock off with a spear which Olfan had given them. This spear he drew in again as they began to move, placing it between his chest and the stone, for he thought that it might be of service to him should they succeed in crossing the gulf. When they were jerked from the sledge, and left to slide along the ice on the further side of the gap, in obedience to the impetus given to them by the frightful speed at which they were travelling, the spear, obeying the same laws of motion, accompanied them, but, being of a less specific gravity, lagged behind in the race, just as the stone, which was heaviest, outstripped them.
As it happened, near the top of the rise there was a fissure in the ice, and in this fissure the weapon had become fixed, its weighted blade causing it to assume an upright position. When the senseless bodies of Leonard and Juanna had slid as far up the slope as the unexpended energy of their impetus would allow, naturally enough they began to move back again in accordance with the laws of gravity. Then it was, as luck would have it, that the spear, fixed in the crevice of the ice, saved them from destruction; for it chanced that the descent of their two forms, passing on either side of it, was checked by the handle of the weapon, which caught the hide rope whereby they were bound together.