Considering the spiritual accomplishments of the ancestors, Yuri Alekseevich constantly wonders about the dialectical connections of the past - present - future. In "Space Secrets of Mounds" this line has many pages. Emphasizing the lack of reliable data on past visits to the Earth by aliens from space, the author reveals the deep relationship of modern astronautics with the "prakosmonavtika" of the primitive world. This is a new word in the study of the history of culture, which has no analogues in world science.