“Why—” Naida looked at him wonderingly. “I mean what I have said. The Serpent comes out of his chasm and—”

“What chasm?” Kirby asked sharply.

“Why, the one we crossed this morning. It extends to the far reaches of our country, beyond the Rorroh forest, where the ape-men dwell but which our people never visit. It is in that distant part of the chasm that the Serpent dwells.”

“But—but—Oh, good Lord!” Kirby whistled softly. “Naida, do you mean to tell me that Quetzalcoatl was not simply a mythical monster, but an actual, living serpent which is alive now?”

Naida and the others shrugged.

“Why not?” she answered. “Sometimes we have captured a few ape-men, and they tell us stories of how Quetzalcoatl kills them. They say he is very much alive.”

“But,” Kirby mumbled in increasing wonder, “is this living creature the same which your ancestors worshipped first as long ago, perhaps, as a million years?”

“That,” Naida answered unhesitatingly, “I’m not sure of. Our caciques believe that the Serpent, although it lives longer than any other sentient thing, finally dies and is succeeded by a new Serpent which is reproduced by itself, within its own body.”

So overwhelming did Kirby find this unexpected sequel to their discovery of the great diamond head, so staggered 394 was he by the fact that Quetzalcoatl, of Aztecan myth, might exist as a sentient creature here in this cavern world, that he had little heart left for exploring other wonders.