Then the cavern echoed with a terrible scream and Vertorix cried out like a man death-stricken, his face ashy in the gloom. He whirled, as if he had forgotten me and my sword, and raced down the tunnel like a madman, shrieking Tamera's name. From far away, as if from the bowels of the earth, I seemed to hear her answering cry, mingled with a strange sibilant clamor that electrified me with nameless but instinctive horror. Then silence fell, broken only by Vertorix's frenzied cries, receding farther and farther into the earth.