Suddenly, while we looked, the rocky wall which the Akka had built at the cavern mouth⁠—was not! It vanished, as though an unseen, unbelievably gigantic hand had with the lightning’s speed swept it away. And with it vanished, too, long lines of the great amphibians close behind it.

Then down upon the ledge, dropping into the Crimson Sea, sending up geysers of ruby spray, dashing on the bridge, crushing the frog-men, fell a shower of stone, mingled with distorted shapes and fragments whose scales still flashed meteoric as they hurled from above.

“That which makes things fall upward,” hissed Olaf. “That which I saw in the garden of Lugur!”

The fiendish agency of destruction which Marakinoff had revealed to Larry; the force that cut off gravitation and sent all things within its range racing outward into space!