Not all the worms are in the desert...
BTW, I thought Dune was great, and the prequel books written by Brian Herbert (Frank's Son) were good, too.
Herbert’s first three novels, Dune, Dune Messiah and Children of Dune constituted a masterwork. David Lynch’s fim was pure crap.
Several years ago the Sci-Fi Channel re-did the trilogy as two releases, combining Dune Messiah and Children of Dune into one mini series. They did a remarkable job of capturing the spirit of the books and staying true to the story.