Cover for Ringworld by Larry Niven.
Synopsis: "a team of cosmonauts is assembled to explore an artefact. Itis a vast circular ribbon of matter, some 180 million miles across,with a sun at its centre - the Ringworld. But the expedition goesdisastrously wrong when the ship crashlands and its motley crew faces atrek across thousands of miles of the Ringworld's surface."
The rings represent the Ringworld - an artificial construction based around a star. The different colours of the layers of Ringworld are actually separate pages of single colour with circles cut out to display underlying pages.
