About the book: 1955 / Planet Sutang has just been discovered by people. Scientists and explorers settled here first to prepare the planet for the arrival of colonists. And then, one day, a group of four people went on a trip on a raft, a strange floating half-plant-half-animal creature of enormous size, which was called Grandfather, set off to explore the surrounding area. But they could not even imagine what dangers they would be exposed to on the way...© ceh (fantlab)***g. “Knowledge is power” No. 3, 1972, pp. 45–47, with illustration.