"What noise is that?" Tom asked. "I have heard it several times before, but not so loud as that."
"Snow-slide," Leaping Horse said. "Snow come down from mountains; break off trees, roll rocks down. Bad place all along here."
"Yes. I saw that you looked up at the hills behind there before you looked over the edge here, chief," Ben Gulston said, "and I reckoned that you had snow-slides in your mind. I thought myself that it was like enough the snow might come tumbling over the edge of that high wall and then come scooting down over where we war, and there would have been no sort of show for us if we had been camped whar the trail goes along."
"Leaping Horse has heard from his red brothers with whom he has spoken that trail from top of valley very bad when snow falls. Many Indians stopping too long at fort, to trade goods, have been swept away by snow-slides when caught in storm here."
"I thought it looked a bad place," Harry remarked. "There ain't no fooling with a snow-slide anyway. I have come across bones once or twice lying scattered about in snug-looking valleys—bones of horses and men, and it was easy to see they had been killed by a snow-slide coming down on them. Rocks were heaped about among them, some of the bones were smashed. They had been hunting or trapping, and sheltered up in a valley when the storm came on and the slide had fallen on them, and there they had laid till the sun melted the snow in summer, when the coyotes and the vultures would soon clean the bones." He broke off suddenly; there was a dull sound, and at the same moment a distinct vibration of the ground, then a rustling murmur mingled with a rumbling as of a waggon passing over a rocky ground.
"There is another one," Jerry exclaimed, "and it is somewhere just above us. Keep your backs to the wall, boys."
[Image: "There Is Another Avalanche, Keep Your Backs To The Wall, Boys">[
Louder and louder grew the sound; the tremor of the earth increased, the horses neighed with fright, the men stood with their backs against the rock next to the hill. Suddenly the light was darkened as a vast mass of snow mingled with rocks of all sizes leapt like a torrent over the edge of the cliff, the impetus carrying it over the outer wall of their shelter and down into the ravine. There was a mighty sound of the crashing of trees, mingled with a thumping and rolling of the rocks as they clashed against the side of the ravine and went leaping down into the valley. The ground shook with a continuous tremor, and then the light returned as suddenly as it had been cut off, and a few seconds later a dead stillness succeeded the deafening roar from below. The passage of the avalanche overhead had lasted but a minute, though to the men standing below it the time had seemed vastly longer. Instinctively they had pressed themselves against the rock, almost holding their breath, and expecting momentarily that one of the boulders in its passage would strike the top of the outside wall and fall in fragments among them. The silence that followed was unbroken for some seconds, and then Sam Hicks stepped a pace forward.
"Jee-rusalem!" he said, "that was a close call. I don't know how you felt, boys, but it seemed as if all the sand had gone out of me, and I weakened so that my knees have not done shaking yet."
The men, accustomed as they were to danger, were all equally affected. Tom felt relieved to see that the others all looked pale and shaken, for he was conscious that he had been in a terrible fright, and that his legs would scarcely support his weight.