As soon as they had finished eating they started down along the mountainside, keeping on the ledges where the walking was good, and descending by easy steps from one ledge to another. They had gone but a short distance when they passed a ravine in which lay a long snow bank hollow beneath. Into this snow cave Hugh went to look for a drink of water and presently called to the boys, telling them to come in to him.
They found themselves in a most beautiful ice grotto. The snow bank was an old one and the rushing waters of spring had tunneled under it, while it melted from above, so that a heavy roof of blue ice stretched across the ravine from side to side. The grotto was eight or ten feet from floor to roof, thirty feet wide and perhaps a hundred long. A drift of snow which had blown in from an opening at its upper end, lay in the bottom of the ravine. The roof seemed not very thick and admitted the light freely. It was a beautiful sky blue and reminded Jack vaguely of some blue grotto in Italy of which he had read and had often heard his mother talk.
The sun was getting lower and lower as the three hurried along the mountain. In most places it was easy going, and in the snow banks, which they were constantly crossing, fresh tracks of goats were seen, but the travelers paid no attention to these and kept on their way as fast as possible.
Long before they had reached the level of the valley the sun had set, but there was light enough for them to go a little way down the stream and then cross on a log-jam which brought them to the other side of the stream. Here they mounted their horses, and in a short time were standing by their tent.
Presently, when the coffee-pot was bubbling and some fat sheep meat sputtering in the pan, when the horses had been looked after and the day's labor was over, it was pleasant to talk of the wonderful things that they had seen since sunrise.
The next morning the boys saddled a pack horse, and crossing the little stream which pours out of the lake, Hugh, Jack and Joe climbed the mountainside, dragging the pack animal behind them.
After they had once got through the thick brush it was not difficult to lead the horse along the ledges, almost to the sheep's carcass. They did at last come to a place where the horse could not get up, and though by taking half a day's time they could probably have found a way to take him to the meat, it seemed simpler and shorter to leave him where he was and to carry the meat to him.