The origin of sand dunes
Herbert's investigation found that the expansion of sand dunes is enough to devour the cities, rivers and highways where human beings live. This subversive force inspired him greatly. He decided to write a science fiction story about a planet swallowed by sand dunes. Frank Herbert worked very hard when he wrote Dune. He often shuts himself in his study for a long time. For the traditional novel theme, every reader will fill in the background information of the story with his own experience, and the author can explain the environment clearly in a few words.