Ringworld a novel larry niven on amazoncom free shipping on qualifying offers winner of the hugo and nebula awards for best novel four travelers come to the ringworld louis wu human and old bored with having lived too fully for far too many years seeking a challenge. Ringworld book read 3039 reviews from the worlds largest community for readers the artefact is a circular ribbon of matter six hundred miles long and. The ringworld is an artificial world with a surface area three million times larger than earths built in the shape of a giant ring shaped ribbon a million miles wide and with a diameter of 186 million miles it was built by the pak who later through infighting left it mostly protector free
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