Those slopes were longer than we thought; indeed, when darkness closed in we had not reached the foot of them. So we were obliged to spend another night in the snow, pitching our tent in the shelter of an over-hanging rock. As we had descended many thousand feet, the temperature proved, fortunately, a little milder; indeed, I do not think that there were more than eighteen or twenty degrees of frost that night. Also here and there the heat of the sun had melted the snow in secluded places, so that we were able to find water to drink, while the yak could fill its poor old stomach with dead-looking mountain mosses, which it seemed to think better than nothing.
Again, the still dawn came, throwing its red garment over the lonesome, endless mountains, and we dragged ourselves to our numbed feet, ate some of our remaining food, and started onwards. Now we could no longer see the country beneath, for it and even the towering volcano were hidden from us by an intervening ridge that seemed to be pierced by a single narrow gulley, towards which we headed. Indeed, as the pillars showed us, thither ran the buried road. By mid-day it appeared quite close to us, and we tramped on in feverish haste. As it chanced, however, there was no need to hurry, for an hour later we learned the truth.
Between us and the mouth of the gulley rose, or rather sank, a sheer precipice that was apparently three or four hundred feet in depth, and at its foot we could hear the sound of water.
Right to the edge of this precipice ran the path, for one of the stone pillars stood upon its extreme brink, and yet how could a road descend such a place as that? We stared aghast; then a possible solution occurred to us.
Don't you see,
said Leo, with a hollow laugh, the gulf has opened since this track was used: volcanic action probably.
Perhaps, or perhaps there was a wooden bridge or
