The giant horse of Oz

"The Giant Horse of Oz" by Ruth Plumly Thompson is a fantasy novel published in 1928. When the evil witch Mombi leaves a fire-breathing lake monster to imprison the remote kingdom of the Ozure Isles, their troubles multiply: the creature demands a mortal maiden as companion. Prince Philador escapes to find help, joining forces with a giant horse with telescoping legs and other unusual companions. Meanwhile, young Trot is kidnapped from the Emerald City. Adventures through strange lands follow as heroes work to free the trapped kingdom and rescue the captives. (This is an automatically generated summary.)