G. A. Henty,
In the Heart of the Rockies: A Story of Adventure in Colorado
“ 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. ”

