Chapter 4: Close to the Edge, pg. 173-180 Summary

The flyer that arrives from Krull is a 20-foot-wide lens with black-robed men harnessed along the edge, each with a tormented look on his face. It speeds across the sea, yet floats several feet above the water. Rincewind is aware that powerful magic has been used to construct the flyer. He explains to Twoflower that the lens was created by fourth-grade wizards using rare, unstable elements. The lens is powered by hydrophobes, wizards trained from birth to loathe water.

The flyer stops just short of the island, and a hooded figure in the center of the lens gestures to Rincewind and Twoflower. Tethis bids them farewell and the two men wade out to the rope ladder being held down by the hooded figure. Waving a silver rod in its other hand...