A taut and gripping fantasy for middle-grade readers. A Saskatchewan Young Readers' Choice Diamond Willow Award Nominee Snow Willow Award nominee 2006 In the distant future on a parched landscape, sits an enormous wall made of towering wooden columns. The wall surrounds the desolate settlement of Regnboga. But inside, nobody can remember a time when the wall was built or when such majestic trees grew. No enemies ever come...