through this unknown valley, it be you, Tarzan of the Apes."
"But if you know nothing of this country, or its inhabitants," demanded Tarzan, "how is it that you so well know the trail that leads to it?"
"We well know the trail to the summit, but that is as far as I have ever been before. The great apes and the lions use this trail when they come down into Opar. The lions, of course, cannot tell us where it leads, and the great apes will not, for usually we are at war with them. Along this trail they come down into Opar to steal our people, and upon this trail we await to capture them, for often we offer a great ape in sacrifice to the Flaming God, or rather that was our former custom, but for many years they have been too wary for us, the toll being upon the other side, though we do not know for what purpose they steal our people, unless it be that they eat them. They are a very powerful race, standing higher than Bolgani, the gorilla, and infinitely more cunning, for, as there is ape blood in our veins, so is there human blood in the veins of these great apes that dwell in the valley above Opar."
"Why is it, La, that we must pass through this valley in order to escape from Opar? There must be some other way."
"There is no other way, Tarzan of the Apes," she replied. "The avenues across the valley are guarded by Cadj's people. Our only chance of escape lies in this direction, and I have brought
