Correction. It was an amazing MudWing Dragon NAMED Clay. They do escape the mountain they're trapped in. It is a 10 book series. I borrowed them from my cousins and read them all. I would do it again. I think that kids ranging from seven year olds to 14 year olds. Please don't skip books. it makes it very very hard to understand. I would recommend Wings of Fire: Legends, Darkstalker. it explains alot in the sixth book. One last time I will say, read this amazing, super exciting, surprising, twisty, twirly story.