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      Back to the Stone Age // Seven Worlds to Conquer

      by Edgar Rice Burroughs
      Published
      Jan 1936
      Main Genre
      Science Fiction Sci-Fi
      Rating
      Buy on Amazon Book
      Series
      Pellucidar Book 5

      About This Book

      Five hundred miles beneath the surface of the Earth lies a world of eternal day and endless horizons, in which dinosaurs still roam and cavemen hunt and terrors for-gotten in the outer world still survive.

      Young Wilhelm von Horst had been given up for lost. His comrades in the expedition had sailed to the surface without him, mourning the loss of their friend.

      But von Horst had not died. His only companion a barbarian girl, he battles his way to safety through terrors inconceivable on the surface of the Earth.

      Series Placement

      Book 5
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      Genres & Themes

      Genres

      Speculative Fiction

      Subgenres

      Action Adventure Science Fiction Space Opera

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      Formats & Editions

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      Paperback

      Paperback edition cover
      Mass Market Paperback
      May 1985 Ace ISBN13 9780441046386 ISBN10 044104638X
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      Mass Market Paperback
      Apr 1990 Ballantine ISBN13 9780345366719 ISBN10 0345366719
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      Trade Paperback
      Jun 2007 University of Nebraska Press ISBN13 9780803262638 ISBN10 0803262639
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      Trade Paperback
      Oct 2014 Bottom of the Hill Publishing ISBN13 9781483706337 ISBN10 1483706338
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      eBook

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      eBook
      Apr 2009 Tower Publishing ISBN13 2940149620289
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      Jun 2017 Otbebookpublishing ISBN10 B07464171V
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      Nov 2017 Jovian Press ISBN10 B077P8YPQN
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