As it was, we lost our bearings immediately, for the chilly mist filled all the spaces between the trees, so that we could not see more than twenty yards in any direction. As to our proper course, we could tell nothing about it, so that the only thing left for us to do was to keep on going down hill. We expected every moment to see or hear our little creek, but we must have missed it somehow, for, though we ought to have reached it long before, we had been picking our way over loose rocks and fallen trees for two hours before we came upon a stream—whether the right or the wrong one we could not tell. Right or wrong, however, we were glad to see it, for by following it we should sooner or later reach the foot of the mountain and get below the cloud.

But to follow it was by no means easy: the country was so unexpectedly rough—a fact which convinced us that we had struck the wrong creek. As we progressed, we presently found ourselves upon the edge of a little cañon which, being too steep to descend, obliged us to diverge to the left, and not only so, but compelled us to go up hill to get around it, which did not suit us at all.

After a time, however, we began to go down once more, but though we kept edging to the right we could not find our creek again. The fog, too, had become more dense than ever, and whether our faces were turned north, south or east we had no idea.

We were going on side by side, when suddenly we were astonished to hear a dog bark, somewhere close by; but though we shouted and whistled there was no reply.

“It must be a prospector’s dog,” said Joe, “and the man himself must be underground and can’t hear us.”

“Perhaps that’s it,” I replied. “Well, let’s take the direction of the sound—if we can. It seemed to me to be that way,” pointing with my hand. “I wish the dog would bark again.”

The dog, however, did not bark again, but instead there happened another surprising thing. We were walking near together, carefully picking our way, when suddenly a big raven, coming from we knew not where, flew between us, so close that we felt the flap of his wings and heard their soft fluff-fluff in the moisture-laden air, and disappeared again into the fog before us with a single croak.

It was rather startling, but beyond that we thought nothing of it, and on we went again, until Joe stopped short, exclaiming: