After about half an hour’s march we came to the mouth of a river which ran into the upper end of the lake. Along the margin of this we followed Chee-Chee for what seemed like another mile or so. Soon the shores of the stream widened out and the woods fell back quite a distance from the water’s edge. The nature of the ground was still clean firm sand. Presently we saw Polynesia’s tiny figure ahead, waiting for us. When we drew up with her we saw that she was standing by an enormous foot-print. There was no doubt about its being a man’s, clear in every detail. It was the most gigantic thing I have ever seen, a barefoot track fully four yards in length. There wasn’t only one, either. Down the shore the trail went on for a considerable distance; and the span that the prints lay apart gave one some idea of the enormous stride of the giant who had left this trail behind him. Questioning and alarmed, Chee-Chee and Polynesia gazed silently up at the Doctor for an explanation. “Humph!” he muttered after a while. “So Man is here, too. My goodness, what a monster! Let us follow the trail.” Chee-Chee was undoubtedly scared of such a plan. It was clearly both his and Polynesia’s idea that the further we got away from the maker of those tracks the better. I could see terror and fright in the eyes of both of them. But neither made any objection; and in silence we plodded along, following in the path of this strange human who must, it would seem, be something out of a fairy tale. But alas! It was not more than a mile further on that the foot-prints turned into the woods where, on the mosses and leaves beneath the trees, no traces had been left at all. Then we turned about and followed the river quite a distance to see if the creature had come back out on the sands again. But never a sign could we see. Chee-Chee spent a good deal of time too at the Doctor’s request trying to find his path through the forest by any signs, such as broken limbs or marks in the earth which he might have left behind. But not another trace could we find. Deciding that he had merely come down to the stream to get a drink, we gave up the pursuit and turned back to the line of our original march. [Illustration: “_An enormous foot-print_”] Again I was thankful that I had company on that expedition. It was certainly a most curious and extraordinary experience. None of us spoke very much but when we did it seemed that all of us had been thinking the same things. The woods grew more and more mysterious, and more and more _alive_, as we went onward towards the other side of the Moon, the side that earthly Man had never seen before. For one thing, the strange music seemed to increase; and for another, there was more movement in the limbs of the trees. Great branches that looked like arms, bunches of small twigs that could have been hands, swung and moved and clawed the air in the most uncanny fashion. And always that steady wind went on blowing, even, regular and smooth.