For those of us who have read Silverberg's novels located in huge, beautiful and diverse Majipoor, the publication of a new book on this marvelous world is always a special event. Two of three previous books in this saga ("Lord Valentine's Castle" and "Valentine Pontifex"), have been full-length novels, with well developed characters and plots, covering 400 pages or more. The third one ("Majipoor Chronicles")is a collection of short stories, which contains one titled "A thief in Nimoya", which I consider one of the best ever written by Silverberg. However, "Mountains of Majipor" is only a short story, maybe what is considered a "novella" in the science fiction jargon. A large print and a clever page layout converted an otherwise short-story in a novel. The books depicts the adventures of a court noble who is disgraced and sent to one of the most remote and harshest areas of Majipoor, where he finds a primitive people, with very strange customs. His mission is to rescue several scientists who have been kidnapped by that isolated tribe. Silverberg's talent for creating believable and interesting aliens appears again in this book, which offers clues to the origin of one of the native peoples of the planet, the shapeshifters. I consider "Mountains of Majipoor" a loosening exercise by the author, preparing himself for the bigger task of giving his readers once again a full novel placed in Majipoor. That one is "Sorcerers of Majipoor", recently published. It was a good read, I liked it, but I expected a little more depth from one of the most respected authors in science fiction.