About the book: 1945 / Sergei Pavlovich Nikitin, a young paleontologist, is excavating a dinosaur cemetery in the south of the USSR. At the end of the expedition, an unusual phenomenon occurs - before the eyes of many people, the ghost of a dinosaur appears in a small mountain valley with a lake of petrified resin. The scientist finds out that this is a manifestation of a rare photographic effect of the area and begins to look for the possibility of obtaining similar images artificially.