Escape on Venus (Carson Napier Adventures #4) (Ace SF Classic, 21561)

IF YOU will look at any good map of Venus you will see that the land mass called Anlap lies northwest of the island of Vepaja, from which Duare and I had just escaped. On Anlap lies Korva, the friendly country toward which I pointed the nose of our plane. Of course there is no good map of Venus, at least none that I ever have seen; because the scientists of the southern hemisphere of the planet, the hemisphere to which Chance carried my rocket ship, have an erroneous conception of the shape of their world. They believe that Amtor, as they call it, is shaped like a saucer and floats upon a sea of molten rock. This seems quite evident to them, for how else might the spewing of lava from the craters of volcanoes be explained? They also believe that Karbol (Cold Country) lies at the periphery of their saucer; whereas it is, as a matter of fact, the Antarctic region surrounding the south pole of Venus. You may readily perceive how this distorts their conception of actual conditions and is reflected in maps, which are, to say the least, weird. Where actually the parallels of longitude converge toward the pole, their conception would be that they converged toward the Equator, or the center of their saucer, and that they were farthest apart at the periphery of the saucer.