The story is set in a future where Earth is overpopulated, and colonization of other planets is made possible by "Ramsbottom Jumps"—teleportation gates that create a "tunnel in the sky".
" Туннель в небе " (original title: ) is a classic science fiction novel by Robert A. Heinlein , first published in 1955. Part of his renowned "juvenile" series, it explores themes of survival, social structure, and the transition from adolescence to adulthood. Plot Summary
