I found this book because I loved the movie - it was a great horror movie, even if the monsters were removed. The movie is just a derivative story representative of similar vignettes contained within the novel.
The novel is SO much more than a monster movie. It's an adventure. The story takes you through a new world miles below ground. While there most certainly are monsters, most of them are human. The savage, barbaric race central to the book's story comes to life under Long's "pen." In fact, everything about the story is vibrant and realistc.
While even the author has a hard time pigeon-holing this one into a specific genre, which makes it hard to find in the bookstore, it only serves to illustrate how wide-ranging this adventure roams, and it's all groovy. I LOVED this book and immediately moved on to the sequel.