Giant Horse of Oz - Ruth Plumly Thompson

In the Ozure Isles in the blue Munchkin Country, the kindom is being terrorized by a horrible monster called Quiberon. After 20 years of horror the beast demands a mortal maiden to be sent to him or the kingdom will perish. But mortol maidens are in short supply in the Land of Oz (Dorothy Gale, Betsy Bobbin, and Trot), so the Ozureians seeks Tattypoo the Good Witch of the North for help. Many ozzy adventures happen in locations such as Cave City, the Roundabouties, and the Shutterfaces, not to mention High Boy the long legged horse! - Summary by T. Craft