“Nowhere to go but out!” grinned Larry. “And I’ll bet Golden Eyes is waiting for us with a taxi!” He stepped forward. We followed, slipping, sliding along the glassy surface; and I, for one, had a lively apprehension of what our fate would be should that enormous mass rise before we had emerged! We reached the end; crept out of the narrow triangle that was its exit.

We stood upon a wide ledge carpeted with a thick yellow moss. I looked behind⁠—and clutched O’Keefe’s arm. The door through which we had come had vanished! There was only a precipice of pale rock, on whose surfaces great patches of the amber moss hung; around whose base our ledge ran, and whose summits, if summits it had, were hidden, like the luminous cliffs, in the radiance above us.

“Nowhere to go but ahead⁠—and Golden Eyes hasn’t kept her date!” laughed O’Keefe⁠—but somewhat grimly.