As no fate can be worse than falling into the hands of these cruel monsters, we hurried on in the hope of crossing their path before we were discovered. We took advantage of what cover the sea bottom afforded us, which was very little; oftentimes compelling us to worm our way along on our bellies, an art which I had learned from the Apaches of Arizona. I was in the lead, when I came upon a human skeleton. It was crumbling to dust, an indication that it must have lain there for many years, for so low is the humidity on Mars that disintegration of bony structures is extremely slow. Within fifty yards I came upon another skeleton and after that we saw many of them. It was a gruesome sight, and what it portended I could not guess. At first I thought that perhaps a battle had once been fought here, but when I saw that some of these skeletons were fresh and well preserved and that others had already started to disintegrate I realized that these men had died many years apart.

At last I felt that we had crossed the line of march of the caravan and that as soon as we had found a hiding place we would be comparatively safe, and just then I came to the edge of a yawning chasm.

Except for the Grand Canyon of the Colorado, I had never seen anything like it.

It was a great rift valley that appeared to be about ten miles wide and perhaps two miles deep, extending for miles in either direction.

There were outcroppings of rock at the rim of the rift, and behind these we hid.

Scattered about us were more human skeletons than we had seen before. Perhaps they were a warning; but at least they could not harm us, and so we turned our attention to the approaching caravan, which had now changed its direction a little and was coming straight toward us. Hoping against hope that they would again change their direction and pass us, we lay there watching them.

When I had been first miraculously transported to Mars I had been captured by a horde of green men, and I had lived with them for a long time; so that I learned to know their customs well. Therefore, I was quite positive that this caravan was making the quinquennial pilgrimage of the horde to its hidden incubator.