Ringworld by Larry Niven
Ringworld

Larry Niven

missing duration info Add in missing duration information first pub 1970 (editions)

fiction science fiction adventurous challenging slow-paced
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The artefact is a circular ribbon of matter six hundred million miles long and ninety million miles in radius. Pierson's puppeteers, the aliens who discovered it, are understandably wary of encountering the builders of such an immense structure an...

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