Mikhail Yemtsev and Eremey Parnov are mostly “earthly” and very modern writers. Taking the atlas, you can easily find the places where the heroes of Yemtsev and Parnov act. Here are the Xingu River and the Martinez Falls, where Dick Ribeira’s detachment cut through the impenetrable jungle. The nature of these places is described in such a way that you feel it as a really existing landscape, and not as a decoration made of papier-mâché, plywood, canvas and paint. Yemtsev and Parnov are by no means geographers, and they did not set themselves the task of popularizing the physical geography of the Brazilian jungle or the Kuril Islands. But since both of them came to science fiction from the world of science, they know the price of scientific accuracy. In the works of Emtsev and Parnov, the reader finds not only an interesting scientific idea, a fascinating plot, but also a certain dose of educational material. In this case, geographical.